inn vs ladies' lounge

inn

noun
  • A tavern. 

  • One of the colleges (societies or buildings) in London, for students of the law barristers. 

  • Any establishment where travellers can procure lodging, food, and drink. 

ladies' lounge

noun
  • A room in a pub or hotel, separate from the main drinking area, in which drinks are served; originally a place for women to drink in when not welcome or not comfortable in the traditionally male-oriented public bar, and latterly a more genteel area than the public bar. 

  • Used other than figuratively or idiomatically: see lady, lounge. 

How often have the words inn and ladies' lounge occurred in a corpus of books? (source: Google Ngram Viewer )