sell someone out vs expose

sell someone out is not a noun while expose is a noun.

Word	Noun	Adjective	Verb	Adverb
sell someone out	No	No	Yes	No
expose	Yes	No	Yes	No

sell someone out (noun)	expose (noun)
	the exposure of an impostor or a fraud

sell someone out (verb)	expose (verb)
give information that compromises others	abandon by leaving out in the open air
	expose while ridiculing; especially of pretentious or false claims and ideas
	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