Ms vs wife

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. 

wife

noun
  • Synonym of woman. 

  • A married woman, especially in relation to her spouse. 

  • The female of a pair of mated animals. 

verb
  • to marry (a woman) 

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