gorilla vs roughie

gorilla

noun
  • A big and brutish man or a thug; a goon or ruffian. 

  • The largest of the apes, belonging to the genus Gorilla, native to the forests of central Africa and known for their trait of knuckle-walking. 

  • A powerful person or organization; a heavyweight or behemoth. 

roughie

noun
  • A film portraying rough sex. 

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