bilk vs gip

bilk

verb
  • To do someone out of their due; to deceive or defraud, to cheat (someone). 

  • To spoil the score of (someone) in cribbage. 

  • To steal fuel from a self-service filling station by driving away without paying after filling the fuel tank or other container; to commit a drive-off. 

noun
  • The spoiling of someone's score in the crib. 

gip

verb
  • To take out the entrails of (herrings). 

  • to retch 

noun
  • A servant; a gyp. 

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