accusative case vs accusative

accusative case and accusative both are nouns.

Word	Noun	Adjective	Verb	Adverb
accusative case	Yes	No	No	No
accusative	Yes	Yes	No	No

As nouns, accusative case and accusative are synonyms defined as:

accusative case and accusative: the case of nouns serving as the direct object of a verb

Other synonyms of accusative case include objective case.

accusative case (noun)	accusative (noun)
the case of nouns serving as the direct object of a verb	the case of nouns serving as the direct object of a verb

accusative case (adjective)	accusative (adjective)
	serving as or indicating the object of a verb or of certain prepositions and used for certain other purposes
	containing or expressing accusation