imprecation vs accusation

imprecation and accusation both are nouns.

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

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

imprecation: a slanderous accusation
accusation: a formal charge of wrongdoing brought against a person; the act of imputing blame or guilt

Other hypernyms of imprecation include accusal.

imprecation (noun)	accusation (noun)
the act of calling down a curse that invokes evil (and usually serves as an insult)	a formal charge of wrongdoing brought against a person; the act of imputing blame or guilt
a slanderous accusation	an assertion that someone is guilty of a fault or offence