blow job vs blowjob

blow job

blowjob

noun
  • Excessive praise. 

  • An act of fellatio, or sucking a penis or other phallic object (such as a dildo). Stimulation of somebody's penis or testicles with a person's lips, tongue or mouth with the purpose of giving the receiver sexual pleasure. It may or may not result in orgasm. 

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