expose vs unmask

expose is a noun but unmask is not a noun.

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

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

expose: expose while ridiculing; especially of pretentious or false claims and ideas
unmask: reveal the true nature of

Other hyponyms of expose include uncloak.

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

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

expose (noun)	unmask (noun)
the exposure of an impostor or a fraud

expose (verb)	unmask (verb)
abandon by leaving out in the open air	reveal the true nature of
expose while ridiculing; especially of pretentious or false claims and ideas	take the mask off
make known to the public information that was previously known only to a few people or that was meant to be kept a secret
put in a dangerous, disadvantageous, or difficult position
remove all or part of one's clothes to show one's body
to show, make visible or apparent
expose to light, of photographic film
expose or make accessible to some action or influence
reveal to view as by removing a cover