blackwash vs calumniation

blackwash and calumniation both are nouns.

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

As nouns, calumniation is a hypernym of blackwash; that is, calumniation is a word with a broader meaning than blackwash:

blackwash: an attack intended to ruin someone's reputation
calumniation: a false accusation of an offense or a malicious misrepresentation of someone's words or actions

Other hypernyms of blackwash include calumny, defamation, hatchet job, obloquy, traducement.

blackwash (noun)	calumniation (noun)
a wash that colors a surface black	a false accusation of an offense or a malicious misrepresentation of someone's words or actions
a mixture of calomel and limewater that is used on syphilitic sores
an attack intended to ruin someone's reputation

blackwash (verb)	calumniation (verb)
color with blackwash
bring (information) out of concealment