deficient vs pigeon

deficient

noun
  • A person who is deficient. 

adj
  • Insufficient or inadequate in amount. 

  • Lacking something essential; often construed with in. 

  • Of a number n, Having the sum of divisors σ(n)<2n, or, equivalently, the sum of proper divisors (or aliquot sum) s(n). 

pigeon

noun
  • A weak or useless person. 

  • One of several birds of the family Columbidae, which consists of more than 300 species. 

  • The meat from this bird. 

  • A person who is a target or victim of a confidence game. 

  • A person hired to transport film footage out of a region where transport options are limited. 

  • A pacifist, appeaser, an isolationist, a dove. 

verb
  • To deceive with a confidence game. 

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