blame game vs accusal

blame game and accusal both are nouns.

Word	Noun	Adjective	Verb	Adverb
blame game	Yes	No	No	No
accusal	Yes	No	No	No

As nouns, accusal is a hypernym of blame game; that is, accusal is a word with a broader meaning than blame game:

blame game: accusations exchanged among people who refuse to accept sole responsibility for some undesirable event
accusal: a formal charge of wrongdoing brought against a person; the act of imputing blame or guilt

Other hypernyms of blame game include accusation.

blame game (noun)	accusal (noun)
accusations exchanged among people who refuse to accept sole responsibility for some undesirable event	a formal charge of wrongdoing brought against a person; the act of imputing blame or guilt