uncover vs unmask

uncover and unmask both are verbs.

Word	Noun	Adjective	Verb	Adverb
uncover	No	No	Yes	No
unmask	No	No	Yes	No

As verbs, unmask is a hyponym of uncover; that is, unmask is a word with a more specific, narrower meaning than uncover:

Other hyponyms of uncover include undo, unwrap, undrape, unclothe, bare, unveil.

uncover (verb)	unmask (verb)
make known to the public information that was previously known only to a few people or that was meant to be kept a secret	reveal the true nature of
remove all or part of one's clothes to show one's body	take the mask off
reveal to view as by removing a cover