cud vs gulp

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. 

gulp

verb
  • To swallow eagerly, or in large draughts; to swallow up; to take down in one swallow. 

  • To react nervously by swallowing. 

intj
  • An indication of (the sound of) an involuntary fear reaction in the form of a swallowing motion. 

noun
  • An unspecified small number of bytes, often two. 

  • The usual amount swallowed. 

  • The sound of swallowing, sometimes indicating fear. 

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