cud vs quid

cud

verb
  • To bring back into the mouth and chew a second time. 

noun
  • The portion of food which is brought back into the mouth by ruminating animals from their first stomach, to be chewed a second time. 

quid

verb
  • To let food drop from the mouth whilst chewing. 

  • To chew tobacco. 

noun
  • Paired with quo, in reference to the phrase quid pro quo (“this for that”): something offered in exchange for something else. 

  • A member of a section of the Democratic-Republican Party between 1805 and 1811, following John Randolph of Roanoke. (From tertium quid.) 

  • A sovereign or guinea. 

  • The inherent nature of something. 

  • pound sterling (usually only used with a whole number of pounds) 

  • the act of chewing such tobacco 

  • dollar, dollars 

  • A piece of material for chewing, especially chewing tobacco. 

  • various national currencies typically known by the name "pound" 

  • euro 

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