blackwash vs uncover

blackwash is a noun but uncover is not a noun.

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

As verbs, uncover is a hypernym of blackwash; that is, uncover is a word with a broader meaning than blackwash:

blackwash: bring (information) out of concealment
uncover: make known to the public information that was previously known only to a few people or that was meant to be kept a secret

Other hypernyms of blackwash include break, bring out, disclose, discover, divulge, expose, give away, let on, let out, reveal, unwrap.

blackwash (noun)	uncover (noun)
a wash that colors a surface black
a mixture of calomel and limewater that is used on syphilitic sores
an attack intended to ruin someone's reputation

blackwash (verb)	uncover (verb)
color with blackwash	make known to the public information that was previously known only to a few people or that was meant to be kept a secret
bring (information) out of concealment	remove all or part of one's clothes to show one's body
	reveal to view as by removing a cover