accusative vs objective case

accusative and objective case both are nouns.

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

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

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

Other synonyms of accusative include accusative case.

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