Detect vs Recognize

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

 DetectRecognize
MeaningTo notice or discover somethingto see or know someone or something again
CEFR levelB2A2
Part of speechverbverb
Usage notesCommonly used in both scientific and everyday contexts. Avoid using in very casual speech.Use 'recognize' when acknowledging something you already know. It's appropriate for everyday conversations but avoid in situations requiring formal language, like legal documents.

Frequently asked questions: Detect vs Recognize

What's the difference between "Detect" and "Recognize"?

"Detect" means: To notice or discover something "Recognize" means: to see or know someone or something again

When should I use "Detect" and "Recognize"?

They can all be used in everyday English.

Are "Detect" and "Recognize" the same CEFR level?

"Detect" is at B2, "Recognize" is at A2 on the CEFR scale.

Related comparisons