beer garden vs ladies' lounge

beer garden

noun
  • A restobar, a pub restaurant, a restaurant known for serving beer and food. 

  • The outdoor section of a public house, where customers can sit in the sun and enjoy their beverages. 

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 beer garden and ladies' lounge occurred in a corpus of books? (source: Google Ngram Viewer )