hetero vs homo

hetero

adj
  • Heterosexual: of, pertaining to, or being a heterosexual person. 

noun
  • A heterosexual person. 

homo

adj
  • Of or pertaining to homosexuality. 

  • Homogenized; almost always said of milk with a high butterfat content. 

noun
  • A human. 

  • I heard that he's a homo, but he hasn't come out of the closet yet. 

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