moorhen vs wife

moorhen

noun
  • A female red grouse, Lagopus lagopus scotica. 

  • Any of various medium-sized water birds of the genus Gallinula, of the rail family, that feed in open water margins. 

wife

noun
  • The female of a pair of mated animals. 

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

  • Synonym of woman. 

verb
  • to marry (a woman) 

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