cat's-foot vs stooge

cat's-foot

noun
  • Synonym of cat's-paw: a foot of a cat; (figurative, obsolete) a person used unwittingly or through trickery by another. 

  • Synonym of mountain cudweed (Antennaria dioica). 

  • Synonym of ground ivy (Glechoma hederacea). 

stooge

noun
  • One who knowingly allows himself or herself to be used for another's profit; a dupe. 

  • A magician's assistant who pretends to be a member of the audience. 

  • A confederate; a person who is secretly working for the researcher, unknown to the study participant. 

  • A straight man. 

  • A secret informant for police. 

verb
  • To act as a straight man. 

How often have the words cat's-foot and stooge occurred in a corpus of books? (source: Google Ngram Viewer )