Mask
Disguise

Masks are sometimes used to avoid recognition. As a disguise the mask acts as a form of protection for the wearer who wishes to assume a role or task without being identified by others.

Masks are also used to prevent recognition while showing membership of a group:

While the niqāb usually shows membership of some Islamic community, its purpose is not to hinder recognition, although it falls under some anti-mask laws such as the French ban on face covering.
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