tup vs wether

tup

noun
  • A male sheep, a ram. 

  • The head of a hammer, and particularly of a steam-driven hammer. 

  • Two pence. 

verb
  • To mate; used of a ram mating with a ewe. 

  • To have sex with, to bonk, etc. 

  • To butt: said of a ram. 

wether

noun
  • A castrated goat. 

  • A castrated ram. 

verb
  • To castrate a male sheep or goat. 

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