Ms vs damsel

Ms

noun
  • Title used before an adult woman's name or surname, especially when it is not desired or possible to indicate her marital status with Miss or Mrs. 

damsel

noun
  • A girl; a maiden (without sexual experience). 

  • A young woman (of noble birth). 

  • A young woman who is not married. 

  • A chattering damsel (component of a mill). 

  • An unmarried lady-in-waiting. 

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