Recognize vs You know something

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

Recognize

Top 1,000 (very common)A2verb

You know something

Top 2,000 (common)
Most common: Recognize
 RecognizeYou know something
Pronunciation🇬🇧 /["/ˈrekəɡnaɪz/","/ˈrekəɡnaɪzɪz/","/ˈrekəɡnaɪzd/","/ˈrekəɡnaɪzɪŋ/"]/🇺🇸 /["/ˈrekəɡnaɪz/","/ˈrekəɡnaɪzɪz/","/ˈrekəɡnaɪzd/","/ˈrekəɡnaɪzɪŋ/"]/🇬🇧 //juː nəʊ ˈsʌmθɪŋ//🇺🇸 //ju noʊ ˈsʌmθɪŋ//
Meaningto see or know someone or something againYou understand or are aware of something.
ExampleI can recognize her voice even when she is not in the room.You know something important about the project.
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 2,000 (common)
CEFR levelA2-
Part of speechverb
Collocationsimmediately, instantly, correctly, learn to, be easy to, as, by, from, clearly, fully, belatedly, must, need to, begin to, as, be commonly recognized, be generally recognized, be universally recognized, clearly, federally, formally, agree to, refuse to, as, be legally recognized, a refusal to recognize somethingyou know what I mean, you know the truth, you know better
Antonymsignore, overlook, missYou don't know, You have no idea
Common mistakesConfusing 'recognize' with 'realize', Using 'recognize' without an object (e.g., 'I recognize' instead of 'I recognize her'), Mixing up tenses, like saying 'recognized' instead of 'recognize' in present situationsUsing 'you know' too often in formal contexts., Confusing it with 'do you know' which asks a question., Omitting context when using it as a filler in conversation.
Usage notesUse 'recognize' when acknowledging something you already know. It's appropriate for everyday conversations but avoid in situations requiring formal language, like legal documents.Commonly used to confirm understanding or share knowledge. Can be informal or formal based on context. Usually not appropriate for very formal writing.

See it in real clips

Recognize
You know something

Frequently asked questions: Recognize vs You know something

What's the difference between Recognize and You know something?

Recognize: to see or know someone or something again You know something: You understand or are aware of something.

Which is more common: Recognize and You know something?

Recognize is the most common in everyday English.

Can you show an example of each?

Recognize: I can recognize her voice even when she is not in the room. You know something: You know something important about the project.

Can I use Recognize and You know something interchangeably?

Not always. Recognize and You know something 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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