autoclave vs spay

autoclave

noun
  • A strong, pressurized, heated vessel, as for laboratory experiments, sterilization, cooking or mineral processing. 

adj
  • autokey 

verb
  • To sterilize laboratory equipment in an autoclave. 

spay

noun
  • The act of spaying an animal. 

verb
  • To remove or destroy the ovaries and/or uterus (of a female animal) so that she cannot become pregnant. 

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