cottage vs teahouse

cottage

noun
  • A meeting place for homosexual men. 

  • A small house. 

  • A seasonal home of any size or stature, a recreational home or a home in a remote location. 

verb
  • To have homosexual sex in a public lavatory; to practice cottaging. 

  • To stay at a seasonal home, to go cottaging. 

teahouse

noun
  • a public lavatory, particularly (dated US gay slang) as a meeting place for gay men. 

  • A cafe or restaurant that serves tea, usually with light food. 

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