ladies' cloakroom vs washroom

ladies' cloakroom

noun
  • A cloakroom intended for use by women. 

washroom

noun
  • A room intended to wash the face and hands. 

  • A room with a toilet, particularly a public toilet. 

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