family room vs playroom

family room

noun
  • A comfortable room in a dwelling, for frequent leisure use. 

playroom

noun
  • A room, allocated as a children's play area, in which noisy or boisterous activities are tolerated. 

  • A room dedicated to sadomasochistic sexual activity. 

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