accusation vs accusative

accusation

noun
  • The act of accusing. 

  • A formal charge brought against a person in a court of law. 

  • An allegation. 

accusative

noun
  • The accusative case. 

adj
  • Producing accusations; in a manner that reflects a finding of fault or blame 

  • Applied to the case (as the fourth case of Latin, Lithuanian and Greek nouns) which expresses the immediate object on which the action or influence of a transitive verb has its limited influence. Other parts of speech, including secondary or predicate direct objects, will also influence a sentence’s construction. In German the case used for direct objects. 

How often have the words accusation and accusative occurred in a corpus of books? (source: Google Ngram Viewer )