incel vs sexually frustrated

incel

adj
  • Not having sexual relations despite wishing to. 

noun
  • A member of an online subculture of people (mostly men) who define themselves as unable to find a romantic or sexual partner despite desiring one. 

  • Anyone who is not sexually active despite desiring to be. 

  • "Involuntary celibacy": the state of not being sexually active despite wishing to be. 

sexually frustrated

adj
  • agitated by a lack of desired sexual outlet 

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