ergative case vs nominative

ergative case

noun
  • A grammatical case used to indicate the agent of a transitive verb in ergative-absolutive languages. 

nominative

noun
  • A noun in the nominative case. 

  • The nominative case. 

adj
  • Making a selection or nomination; choosing. 

  • Being in that case or form of a noun which stands as the subject of a finite verb. 

  • Giving a name; naming; designating. 

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