hart vs wether

hart

noun
  • A male red deer or one of related species. 

  • A male deer, especially the male of the red deer after his fifth year. 

wether

noun
  • A castrated goat. 

  • A castrated ram. 

verb
  • To castrate a male sheep or goat. 

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