Attach vs Connect

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

Attach

Top 1,000 (very common)B1verb

Connect

Top 1,000 (very common)A2verb
 AttachConnect
Pronunciation🇬🇧 /["/əˈtætʃ/","/əˈtætʃɪz/","/əˈtætʃt/","/əˈtætʃɪŋ/"]/🇺🇸 /["/əˈtætʃ/","/əˈtætʃɪz/","/əˈtætʃt/","/əˈtætʃɪŋ/"]/🇬🇧 /["/kəˈnekt/","/kəˈnekts/","/kəˈnektɪd/","/kəˈnektɪŋ/"]/🇺🇸 /["/kəˈnekt/","/kəˈnekts/","/kəˈnektɪd/","/kəˈnektɪŋ/"]/
Meaningto connect or fasten something to another thingto join or link things together
ExamplePlease attach the document to your email before sending it.I need to connect my phone to the Wi-Fi.
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 1,000 (very common)
CEFR levelB1A2
Part of speechverbverb
Collocationsfirmly, securely, loosely, todirectly, physically, remotely, to, with, directly, physically, remotely, to, with, directly, physically, remotely, to, with, closely, inextricably, intimately, to, with, directly, physically, remotely, to, with
Antonymsdetach, removedisconnect, separate, break
Common mistakesConfused with 'detach' – forgetting to use the right prefix., Using 'attaching' incorrectly in passive constructions., Not following with an object, e.g., 'attach to' instead of 'attach the document to'.'Connect with' is often confused with 'connect to'; 'connect to' is typically used for devices., 'Connecting' is sometimes incorrectly used when referring to relationships instead of feelings.
Usage notesUse 'attach' for both physical and abstract connections, like emails or documents. Less common in very formal writing. Avoid with informal language unless using slang.Used to describe joining two entities, like people, ideas, or objects. Can be used in social contexts (connecting with friends) or technical contexts (connecting devices). Avoid in overly formal writing.

Frequently asked questions: Attach vs Connect

What's the difference between Attach and Connect?

Attach: to connect or fasten something to another thing Connect: to join or link things together

Which is more advanced: Attach and Connect?

Attach is the highest level, at B1, on the CEFR scale.

Are Attach and Connect the same CEFR level?

Attach: B1, Connect: A2 on the CEFR scale.

What part of speech are Attach and Connect?

Attach: verb, Connect: verb.

Can you show an example of each?

Attach: Please attach the document to your email before sending it. Connect: I need to connect my phone to the Wi-Fi.

Can I use Attach and Connect interchangeably?

Not always. Attach and Connect 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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