Costume vs Mask

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

 CostumeMask
MeaningAn outfit worn for a particular occasion, often for parties or performances.A cover for the face that hides it or protects it.
CEFR levelB1C1
Part of speechnounnoun
Usage notesUse 'costume' when referring to clothing for events like Halloween or theatrical performances. Avoid using it in formal contexts not related to dress or play.Use 'mask' when talking about face coverings for protection or disguise. It's appropriate in both casual and formal contexts, but avoid it in discussions about personal identity unless referring to metaphorical masking.

Frequently asked questions: Costume vs Mask

What's the difference between "Costume" and "Mask"?

"Costume" means: An outfit worn for a particular occasion, often for parties or performances. "Mask" means: A cover for the face that hides it or protects it.

When should I use "Costume" and "Mask"?

They can all be used in everyday English.

Are "Costume" and "Mask" the same CEFR level?

"Costume" is at B1, "Mask" is at C1 on the CEFR scale.

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