beauty parlor vs drawing room

beauty parlor

noun
  • A salon where hairdressers, beauticians, and cosmeticians work. 

drawing room

noun
  • A room where engineers draw up plans and patterns. 

  • A multifunctional room that can be used for any purpose in a palace or castle. 

  • A private room on a railroad sleeping car. 

  • A levée where ladies are presented at court or to society. 

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