hen vs moorhen

hen

noun
  • A female of other bird species, particularly a sexually mature female fowl. 

  • A female chicken (Gallus gallus), particularly a sexually mature one kept for her eggs. 

  • A female fish (especially a salmon or trout) or crustacean. 

  • The hard clam (Mercenaria mercenaria), a bivalve shellfish. 

  • A hen night. 

  • A woman, particularly 

  • An affectionate term of address used to women or girls. 

  • A henlike person of either sex. 

  • Coordinate term: cock 

  • A bride-to-be, particularly in the context of her "hen night" festivities. 

adv
  • Hence. 

verb
  • To throw. 

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. 

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