Keys
đ Keys / Security Vocabulary
1. Key
- English: A small metal object used to open or close a lock
- Bangla: āĻāĻžāĻŦāĻŋ
- Sentence: I lost my house key yesterday.
đ āĻāĻŽāĻŋ āĻāϤāĻāĻžāϞ āĻāĻŽāĻžāϰ āĻŦāĻžāĻĄāĻŧāĻŋāϰ āĻāĻžāĻŦāĻŋ āĻšāĻžāϰāĻŋāϝāĻŧā§ āĻĢā§āϞā§āĻāĻŋāĨ¤
2. Lock
- English: A device used to secure something so it cannot be opened without a key
- Bangla: āϤāĻžāϞāĻž
- Sentence: The door has a strong lock for safety.
đ āĻĻāϰāĻāĻžāĻāĻŋāϤ⧠āύāĻŋāϰāĻžāĻĒāϤā§āϤāĻžāϰ āĻāύā§āϝ āĻļāĻā§āϤ āϤāĻžāϞāĻž āĻāĻā§āĨ¤
3. Unlock
- English: To open something using a key or code
- Bangla: āĻā§āϞ⧠āĻĢā§āϞāĻž / āĻāύāϞāĻ āĻāϰāĻž
- Sentence: She unlocked the door quickly.
đ āϏ⧠āĻĻā§āϰā§āϤ āĻĻāϰāĻāĻžāĻāĻŋ āĻā§āϞ⧠āĻĢā§āϞāϞāĨ¤
4. Security
- English: Protection from danger or crime
- Bangla: āύāĻŋāϰāĻžāĻĒāϤā§āϤāĻž
- Sentence: Good security is important in public places.
đ āĻāύāϏāĻŽāĻžāĻāĻŽ āϏā§āĻĨāĻžāύ⧠āĻāĻžāϞ⧠āύāĻŋāϰāĻžāĻĒāϤā§āϤāĻž āĻā§āϰā§āϤā§āĻŦāĻĒā§āϰā§āĻŖāĨ¤
5. Access
- English: The ability to enter or use something
- Bangla: āĻĒā§āϰāĻŦā§āĻļāĻžāϧāĻŋāĻāĻžāϰ / āĻŦā§āϝāĻŦāĻšāĻžāϰ āĻāϰāĻžāϰ āϏā§āϝā§āĻ
- Sentence: Students have access to the library.
đ āĻļāĻŋāĻā§āώāĻžāϰā§āĻĨā§āĻĻā§āϰ āϞāĻžāĻāĻŦā§āϰā§āϰāĻŋāϤ⧠āĻĒā§āϰāĻŦā§āĻļāĻžāϧāĻŋāĻāĻžāϰ āĻāĻā§āĨ¤
6. Digital key
- English: A password or code used instead of a physical key
- Bangla: āĻĄāĻŋāĻāĻŋāĻāĻžāϞ āĻāĻžāĻŦāĻŋ
- Sentence: We use a digital key to open the system.
đ āĻāĻŽāϰāĻž āϏāĻŋāϏā§āĻā§āĻŽ āĻā§āϞāϤ⧠āĻĄāĻŋāĻāĻŋāĻāĻžāϞ āĻāĻžāĻŦāĻŋ āĻŦā§āϝāĻŦāĻšāĻžāϰ āĻāϰāĻŋāĨ¤
7. Password
- English: A secret word or code to access something
- Bangla: āĻĒāĻžāϏāĻāϝāĻŧāĻžāϰā§āĻĄ / āĻā§āĻĒāύ āĻā§āĻĄ
- Sentence: Never share your password with others.
đ āĻāĻāύā§āĻ āĻ āύā§āϝā§āϰ āϏāĻžāĻĨā§ āϤā§āĻŽāĻžāϰ āĻĒāĻžāϏāĻāϝāĻŧāĻžāϰā§āĻĄ āĻļā§āϝāĻŧāĻžāϰ āĻāϰ⧠āύāĻžāĨ¤
8. Security system
- English: A system designed to protect people or property
- Bangla: āύāĻŋāϰāĻžāĻĒāϤā§āϤāĻž āĻŦā§āϝāĻŦāϏā§āĻĨāĻž
- Sentence: The building has a modern security system.
đ āĻāĻŦāύāĻāĻŋāϤ⧠āĻāϧā§āύāĻŋāĻ āύāĻŋāϰāĻžāĻĒāϤā§āϤāĻž āĻŦā§āϝāĻŦāϏā§āĻĨāĻž āĻāĻā§āĨ¤
9. Entry
- English: The act of going into a place
- Bangla: āĻĒā§āϰāĻŦā§āĻļ
- Sentence: Entry is not allowed without permission.
đ āĻ āύā§āĻŽāϤāĻŋ āĻāĻžā§āĻž āĻĒā§āϰāĻŦā§āĻļ āĻāϰāĻž āϝāĻžāĻŦā§ āύāĻžāĨ¤
10. Exit
- English: A way out of a place
- Bangla: āĻŦāĻžāĻšāĻŋāϰ āĻšāĻāϝāĻŧāĻžāϰ āĻĒāĻĨ
- Sentence: Use the emergency exit in danger.
đ āĻŦāĻŋāĻĒāĻĻā§āϰ āϏāĻŽāϝāĻŧ āĻāϰā§āϰāĻŋ āĻŦāĻžāĻšāĻŋāϰ āĻšāĻāϝāĻŧāĻžāϰ āĻĒāĻĨ āĻŦā§āϝāĻŦāĻšāĻžāϰ āĻāϰā§āύāĨ¤
11. Keyhole
- English: A small hole in a lock where a key is inserted
- Bangla: āĻāĻžāĻŦāĻŋāϰ āĻāĻŋāĻĻā§āϰ
- Sentence: He looked through the keyhole.
đ āϏ⧠āĻāĻžāĻŦāĻŋāϰ āĻāĻŋāĻĻā§āϰ āĻĻāĻŋāϝāĻŧā§ āϤāĻžāĻāĻžāϞāĨ¤
12. Master key
- English: A key that can open many locks
- Bangla: āĻŽāĻžāϏā§āĻāĻžāϰ āĻāĻžāĻŦāĻŋ
- Sentence: The janitor has a master key.
đ āĻĻāĻžāϰā§āϝāĻŧāĻžāύā§āϰ āĻāĻžāĻā§ āĻŽāĻžāϏā§āĻāĻžāϰ āĻāĻžāĻŦāĻŋ āĻāĻā§āĨ¤
13. Access control
- English: A system that controls who can enter a place
- Bangla: āĻĒā§āϰāĻŦā§āĻļ āύāĻŋāϝāĻŧāύā§āϤā§āϰāĻŖ āĻŦā§āϝāĻŦāϏā§āĻĨāĻž
- Sentence: The office uses access control for safety.
đ āĻ āĻĢāĻŋāϏāĻāĻŋ āύāĻŋāϰāĻžāĻĒāϤā§āϤāĻžāϰ āĻāύā§āϝ āĻĒā§āϰāĻŦā§āĻļ āύāĻŋāϝāĻŧāύā§āϤā§āϰāĻŖ āĻŦā§āϝāĻŦāϏā§āĻĨāĻž āĻŦā§āϝāĻŦāĻšāĻžāϰ āĻāϰā§āĨ¤
14. Locksmith
- English: A person who makes or repairs locks and keys
- Bangla: āĻāĻžāĻŦāĻŋ āĻŽāĻŋāϏā§āϤā§āϰāĻŋ / āϤāĻžāϞāĻž āĻŽāĻŋāϏā§āϤā§āϰāĻŋ
- Sentence: We called a locksmith to open the door.
đ āĻĻāϰāĻāĻž āĻā§āϞāϤ⧠āĻāĻŽāϰāĻž āĻāĻāĻāύ āϤāĻžāϞāĻž āĻŽāĻŋāϏā§āϤā§āϰāĻŋ āĻĄā§āĻā§āĻāĻŋāϞāĻžāĻŽāĨ¤
15. Security breach
- English: An incident where security is broken
- Bangla: āύāĻŋāϰāĻžāĻĒāϤā§āϤāĻž āĻāĻā§āĻ
- Sentence: There was a security breach in the system.
đ āϏāĻŋāϏā§āĻā§āĻŽā§ āĻāĻāĻāĻŋ āύāĻŋāϰāĻžāĻĒāϤā§āϤāĻž āĻāĻā§āĻ āĻāĻā§āĻā§āĨ¤
16. Biometric
- English: Using body features (fingerprint, face) for identification
- Bangla: āĻŦāĻžā§ā§āĻŽā§āĻā§āϰāĻŋāĻ (āĻāĻā§āϞā§āϰ āĻāĻžāĻĒ/āĻŽā§āĻ āĻļāύāĻžāĻā§āϤāĻāϰāĻŖ)
- Sentence: Many phones use biometric security.
đ āĻ āύā§āĻ āĻĢā§āύ āĻŦāĻžā§ā§āĻŽā§āĻā§āϰāĻŋāĻ āύāĻŋāϰāĻžāĻĒāϤā§āϤāĻž āĻŦā§āϝāĻŦāĻšāĻžāϰ āĻāϰā§āĨ¤
17. Fingerprint
- English: Unique pattern on a personâs finger used for identification
- Bangla: āĻāĻā§āϞā§āϰ āĻāĻžāĻĒ
- Sentence: The door opens with a fingerprint scan.
đ āĻĻāϰāĻāĻžāĻāĻŋ āĻāĻā§āϞā§āϰ āĻāĻžāĻĒ āϏā§āĻā§āϝāĻžāύ āĻĻāĻŋāϝāĻŧā§ āĻā§āϞā§āĨ¤
18. Surveillance
- English: Continuous observation of people or places
- Bangla: āύāĻāϰāĻĻāĻžāϰāĻŋ
- Sentence: CCTV is used for surveillance in banks.
đ āĻŦā§āϝāĻžāĻāĻā§ āύāĻāϰāĻĻāĻžāϰāĻŋāϰ āĻāύā§āϝ āϏāĻŋāϏāĻŋāĻāĻŋāĻāĻŋ āĻŦā§āϝāĻŦāĻšāĻžāϰ āĻāϰāĻž āĻšāϝāĻŧāĨ¤
19. CCTV (Closed-Circuit Television)
- English: Cameras used for security monitoring
- Bangla: āϏāĻŋāϏāĻŋāĻāĻŋāĻāĻŋ āĻā§āϝāĻžāĻŽā§āϰāĻž
- Sentence: CCTV cameras improve public safety.
đ āϏāĻŋāϏāĻŋāĻāĻŋāĻāĻŋ āĻā§āϝāĻžāĻŽā§āϰāĻž āĻāύāύāĻŋāϰāĻžāĻĒāϤā§āϤāĻž āĻŦāĻžāĻĄāĻŧāĻžāϝāĻŧāĨ¤
20. Alarm system
- English: A system that warns about danger
- Bangla: āĻ ā§āϝāĻžāϞāĻžāϰā§āĻŽ āϏāĻŋāϏā§āĻā§āĻŽ
- Sentence: The alarm system activated during the break-in.
đ āĻā§āϰāĻŋāϰ āϏāĻŽāϝāĻŧ āĻ ā§āϝāĻžāϞāĻžāϰā§āĻŽ āϏāĻŋāϏā§āĻā§āĻŽ āĻāĻžāϞ⧠āĻšāϝāĻŧā§ āϝāĻžāϝāĻŧāĨ¤
21. Unauthorized
- English: Without permission
- Bangla: āĻ āύāύā§āĻŽā§āĻĻāĻŋāϤ
- Sentence: Unauthorized entry is strictly prohibited.
đ āĻ āύāύā§āĻŽā§āĻĻāĻŋāϤ āĻĒā§āϰāĻŦā§āĻļ āĻāĻ ā§āϰāĻāĻžāĻŦā§ āύāĻŋāώāĻŋāĻĻā§āϧāĨ¤
22. Encryption
- English: Converting data into a secret code
- Bangla: āĻāύāĻā§āϰāĻŋāĻĒāĻļāύ / āϤāĻĨā§āϝ āĻā§āĻĒāύ āĻā§āĻĄā§ āϰā§āĻĒāĻžāύā§āϤāϰ
- Sentence: Encryption protects online information.
đ āĻāύāĻā§āϰāĻŋāĻĒāĻļāύ āĻ āύāϞāĻžāĻāύ āϤāĻĨā§āϝ āϏā§āϰāĻā§āώāĻŋāϤ āϰāĻžāĻā§āĨ¤
23. Authentication
- English: Process of verifying identity
- Bangla: āĻĒāϰāĻŋāĻāϝāĻŧ āϝāĻžāĻāĻžāĻāĻāϰāĻŖ
- Sentence: Password authentication is required to log in.
đ āϞāĻāĻāύ āĻāϰāĻžāϰ āĻāύā§āϝ āĻĒāĻžāϏāĻāϝāĻŧāĻžāϰā§āĻĄ āϝāĻžāĻāĻžāĻāĻāϰāĻŖ āĻĒā§āϰāϝāĻŧā§āĻāύāĨ¤
24. Break-in
- English: Illegal entry into a building
- Bangla: āĻā§āϰāĻŋ āĻāϰ⧠āĻĒā§āϰāĻŦā§āĻļ / āĻĄāĻžāĻāĻžāϤāĻŋ
- Sentence: There was a break-in last night.
đ āĻāϤ āϰāĻžāϤ⧠āĻāĻāĻāĻŋ āĻā§āϰāĻŋāϰ āĻāĻāύāĻž āĻāĻā§āĻā§āĨ¤
25. Secure
- English: Safe from danger or attack
- Bangla: āύāĻŋāϰāĻžāĻĒāĻĻ / āϏā§āϰāĻā§āώāĻŋāϤ
- Sentence: The building is very secure.
đ āĻāĻŦāύāĻāĻŋ āĻā§āĻŦāĻ āύāĻŋāϰāĻžāĻĒāĻĻāĨ¤
26. Vulnerable
- English: Easy to be harmed or attacked
- Bangla: āĻā§āĻāĻāĻŋāĻĒā§āϰā§āĻŖ / āĻĻā§āϰā§āĻŦāϞ
- Sentence: Old systems are vulnerable to hacking.
đ āĻĒā§āϰā§āύ⧠āϏāĻŋāϏā§āĻā§āĻŽ āĻšā§āϝāĻžāĻāĻŋāĻā§ā§āϰ āĻāύā§āϝ āĻā§āĻāĻāĻŋāĻĒā§āϰā§āĻŖāĨ¤
27. Firewall
- English: A system that protects computers from hackers
- Bangla: āĻĢāĻžāϝāĻŧāĻžāϰāĻāϝāĻŧāĻžāϞ (āĻāĻŽā§āĻĒāĻŋāĻāĻāĻžāϰ āύāĻŋāϰāĻžāĻĒāϤā§āϤāĻž āĻŦā§āϝāĻŦāϏā§āĻĨāĻž)
- Sentence: A firewall protects your device from viruses.
đ āĻĢāĻžāϝāĻŧāĻžāϰāĻāϝāĻŧāĻžāϞ āĻāĻĒāύāĻžāϰ āĻĄāĻŋāĻāĻžāĻāϏāĻā§ āĻāĻžāĻāϰāĻžāϏ āĻĨā§āĻā§ āϰāĻā§āώāĻž āĻāϰā§āĨ¤
28. Hack / Hacking
- English: Unauthorized access to a computer system
- Bangla: āĻšā§āϝāĻžāĻāĻŋāĻ / āĻ āĻŦā§āϧāĻāĻžāĻŦā§ āĻĒā§āϰāĻŦā§āĻļ
- Sentence: Hacking is a serious cyber crime.
đ āĻšā§āϝāĻžāĻāĻŋāĻ āĻāĻāĻāĻŋ āĻā§āϰā§āϤāϰ āϏāĻžāĻāĻŦāĻžāϰ āĻ āĻĒāϰāĻžāϧāĨ¤
29. Cybersecurity
- English: Protection of computer systems from digital attacks
- Bangla: āϏāĻžāĻāĻŦāĻžāϰ āύāĻŋāϰāĻžāĻĒāϤā§āϤāĻž
- Sentence: Cybersecurity is important in modern life.
đ āĻāϧā§āύāĻŋāĻ āĻā§āĻŦāύ⧠āϏāĻžāĻāĻŦāĻžāϰ āύāĻŋāϰāĻžāĻĒāϤā§āϤāĻž āĻā§āϰā§āϤā§āĻŦāĻĒā§āϰā§āĻŖāĨ¤
30. Restricted area
- English: A place where access is limited
- Bangla: āύāĻŋāώāĻŋāĻĻā§āϧ āĻāϞāĻžāĻāĻž / āϏā§āĻŽāĻžāĻŦāĻĻā§āϧ āĻāϞāĻžāĻāĻž
- Sentence: This is a restricted area for staff only.
đ āĻāĻāĻŋ āĻļā§āϧ⧠āĻāϰā§āĻŽā§āĻĻā§āϰ āĻāύā§āϝ āϏā§āĻŽāĻžāĻŦāĻĻā§āϧ āĻāϞāĻžāĻāĻžāĨ¤
đ IELTS Idioms (Band 7â8)
1. Key to success
- Meaning: Most important factor for success
- Sentence: Hard work is the key to success.
đ āĻāĻ ā§āϰ āĻĒāϰāĻŋāĻļā§āϰāĻŽāĻ āϏāĻžāĻĢāϞā§āϝā§āϰ āĻŽā§āϞ āĻāĻžāĻŦāĻŋāĻāĻžāĻ āĻŋāĨ¤
2. Under lock and key
- Meaning: Locked securely; well protected
- Sentence: The documents are kept under lock and key.
đ āύāĻĨāĻŋāĻā§āϞ⧠āĻā§āĻŦ āύāĻŋāϰāĻžāĻĒāĻĻāĻāĻžāĻŦā§ āϰāĻžāĻāĻž āĻšāϝāĻŧā§āĻā§āĨ¤
3. Lock the door on something
- Meaning: To stop something completely
- Sentence: The new policy may lock the door on corruption.
đ āύāϤā§āύ āύā§āϤāĻŋāĻāĻŋ āĻĻā§āϰā§āύā§āϤāĻŋāĻā§ āĻĒā§āϰā§āĻĒā§āϰāĻŋ āĻŦāύā§āϧ āĻāϰāϤ⧠āĻĒāĻžāϰā§āĨ¤
4. Open the door to
- Meaning: Create opportunity
- Sentence: Education opens the door to a better future.
đ āĻļāĻŋāĻā§āώāĻž āĻāĻāĻāĻŋ āĻāĻžāϞ⧠āĻāĻŦāĻŋāώā§āϝāϤā§āϰ āĻĻāϰāĻāĻž āĻā§āϞ⧠āĻĻā§āϝāĻŧāĨ¤
5. Break into
- Meaning: Enter illegally
- Sentence: The thieves broke into the house at night.
đ āĻā§āϰāϰāĻž āϰāĻžāϤ⧠āĻŦāĻžāĻĄāĻŧāĻŋāϤ⧠āĻĸā§āĻā§ āĻĒāĻĄāĻŧā§āĨ¤
6. Keep something secure under wraps
- Meaning: Keep something secret and protected
- Sentence: The company kept the project under wraps.
đ āĻā§āĻŽā§āĻĒāĻžāύāĻŋāĻāĻŋ āĻĒā§āϰāĻāϞā§āĻĒāĻāĻŋ āĻā§āĻĒāύ āϰā§āĻā§āĻāĻŋāϞāĨ¤
7. Throw away the key
- Meaning: Punish someone forever (figurative)
- Sentence: Criminals like this should be thrown away the key.
đ āĻāĻŽāύ āĻ āĻĒāϰāĻžāϧā§āĻĻā§āϰ āĻāĻā§āĻŦāύ āĻļāĻžāϏā§āϤāĻŋ āĻĻā§āĻāϝāĻŧāĻž āĻāĻāĻŋāϤāĨ¤
8. Digital fortress
- Meaning: Very strong digital security system
- Sentence: The bank has built a digital fortress.
đ āĻŦā§āϝāĻžāĻāĻāĻāĻŋ āĻļāĻā§āϤāĻŋāĻļāĻžāϞ⧠āĻĄāĻŋāĻāĻŋāĻāĻžāϞ āύāĻŋāϰāĻžāĻĒāϤā§āϤāĻž āĻŦā§āϝāĻŦāϏā§āĻĨāĻž āϤā§āϰāĻŋ āĻāϰā§āĻā§āĨ¤
đ IELTS Collocations (Band 7â8)
đ Security & Protection
1. Tight security
- Meaning: Strong security system
- Sentence: Airports have tight security checks.
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2. Enhanced security measures
- Meaning: Improved safety steps
- Sentence: Schools need enhanced security measures.
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3. Strict access control
- Meaning: Strong rules for entry
- Sentence: The office follows strict access control.
đ āĻ āĻĢāĻŋāϏāĻāĻŋ āĻāĻ ā§āϰ āĻĒā§āϰāĻŦā§āĻļ āύāĻŋāϝāĻŧāύā§āϤā§āϰāĻŖ āĻŽā§āύ⧠āĻāϞā§āĨ¤
4. Unauthorized access
- Meaning: Illegal entry
- Sentence: Unauthorized access is a serious crime.
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5. Advanced security system
- Meaning: Modern protection system
- Sentence: The building uses an advanced security system.
đ āĻāĻŦāύāĻāĻŋ āĻāϧā§āύāĻŋāĻ āύāĻŋāϰāĻžāĻĒāϤā§āϤāĻž āĻŦā§āϝāĻŦāϏā§āĻĨāĻž āĻŦā§āϝāĻŦāĻšāĻžāϰ āĻāϰā§āĨ¤
6. Digital security
- Meaning: Protection of online data
- Sentence: Digital security is essential today.
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7. Cyber threat
- Meaning: Online danger or attack
- Sentence: Companies must protect against cyber threats.
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8. Data encryption
- Meaning: Securing data using codes
- Sentence: Data encryption prevents hacking.
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9. Security breach
- Meaning: Failure in security system
- Sentence: The system suffered a security breach.
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10. Surveillance system
- Meaning: Monitoring system (CCTV etc.)
- Sentence: A surveillance system improves safety.
đ āύāĻāϰāĻĻāĻžāϰāĻŋ āĻŦā§āϝāĻŦāϏā§āĻĨāĻž āύāĻŋāϰāĻžāĻĒāϤā§āϤāĻž āĻŦāĻžāĻĄāĻŧāĻžāϝāĻŧāĨ¤
