jerk off vs self-abuse

jerk off

verb
  • To deceive. 

  • To masturbate, usually a male. 

  • To do nothing; to waste time. 

noun
  • An act of masturbation. 

  • A stunt in which the performer is suddenly pulled off a horse, etc. by means of a cable. 

  • An annoying person. 

self-abuse

verb
  • To harm oneself. 

noun
  • Physical or verbal maltreatment of oneself. 

  • Injury inflicted deliberately upon oneself, especially resulting from a mental disorder. 

How often have the words jerk off and self-abuse occurred in a corpus of books? (source: Google Ngram Viewer )