Bind vs Lock

When to use each in English, with meaning, register, and examples.

Bind

Top 2,000 (common)C1verb

Lock

Top 1,000 (very common)A2verb
Most common: Lock
 BindLock
Pronunciation🇬🇧 /["/baɪnd/","/baɪndz/","/baʊnd/","/ˈbaɪndɪŋ/"]/🇺🇸 /["/baɪnd/","/baɪndz/","/baʊnd/","/ˈbaɪndɪŋ/"]/🇬🇧 /["/lɒk/","/lɒks/","/lɒkt/","/ˈlɒkɪŋ/"]/🇺🇸 /["/lɑːk/","/lɑːks/","/lɑːkt/","/ˈlɑːkɪŋ/"]/
Meaningto tie or fasten things togetherA device that keeps things secure and needs a key or combination to open.
ExampleThe agreement will bind both parties to the contract.Please make sure to lock the door before you leave.
RegisterNeutralNeutral
How commonTop 2,000 (common)Top 1,000 (very common)
CEFR levelC1A2
Part of speechverbverb
Collocationstightly, loosely, together, to, with, bind and gag somebody, bind somebody hand and foot, contractually, legally, morally, be beautifully bound, be handsomely bound, be richly bound, contractually, legally, morallycarefully, automatically, electronically, forget to, be firmly locked, be securely locked, keep something locked, away, in, in, be safely locked, be securely locked
Antonymsunbind, loosen, releaseunlock, open
Common mistakesConfusing 'bind' with 'bond' — 'bond' usually implies a relationship., Using 'bind' incorrectly in a figurative sense without clear context., Forget to use the appropriate preposition when indicating what is being bound.Confused with 'unlock', not realizing they are opposites., Using 'lock' as a noun instead of a verb incorrectly., Mispronouncing 'lock' as 'luck'.
Usage notesUse 'bind' in contexts where something is physically tied or metaphorically connected. It's suitable for both formal and informal contexts but can feel technical in legal or academic texts.Use 'lock' when talking about securing something, like a door or a bike. Avoid using it in very casual conversations where simpler terms like 'close' may be more appropriate.

Frequently asked questions: Bind vs Lock

What's the difference between Bind and Lock?

Bind: to tie or fasten things together Lock: A device that keeps things secure and needs a key or combination to open.

Which is more common: Bind and Lock?

Lock is the most common in everyday English.

Which is more advanced: Bind and Lock?

Bind is the highest level, at C1, on the CEFR scale.

Are Bind and Lock the same CEFR level?

Bind: C1, Lock: A2 on the CEFR scale.

What part of speech are Bind and Lock?

Bind: verb, Lock: verb.

Can you show an example of each?

Bind: The agreement will bind both parties to the contract. Lock: Please make sure to lock the door before you leave.

Can I use Bind and Lock interchangeably?

Not always. Bind and Lock are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.

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