bathroom vs jacks

bathroom

verb
  • To assist a patient with using the toilet and general personal hygiene. 

noun
  • A room containing a shower and/or bathtub, and (typically but not necessarily) a toilet. 

  • A lavatory: a room containing a toilet and (typically but not necessarily) a bathtub. 

jacks

noun
  • A pair of jacks. 

  • Heroin tablets (from "jacks and jills" = pills) 

  • A children's game involving picking up objects; knucklebones; jackstones. 

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