recrimination vs accusation

recrimination and accusation both are nouns.

Word	Noun	Adjective	Verb	Adverb
recrimination	Yes	No	No	No
accusation	Yes	No	No	No

As nouns, accusation is a hypernym of recrimination; that is, accusation is a word with a broader meaning than recrimination:

recrimination: mutual accusations
accusation: a formal charge of wrongdoing brought against a person; the act of imputing blame or guilt

Other hypernyms of recrimination include accusal.

recrimination (noun)	accusation (noun)
mutual accusations	a formal charge of wrongdoing brought against a person; the act of imputing blame or guilt
	an assertion that someone is guilty of a fault or offence