churlish vs deficient

churlish

adj
  • Difficult to till, lacking pliancy; unmanageable. 

  • Stingy or grudging. 

  • Of or pertaining to a serf, peasant, or rustic. 

  • Rude, surly, ungracious. 

deficient

adj
  • Lacking something essential; often construed with in. 

  • Insufficient or inadequate in amount. 

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

noun
  • A person who is deficient. 

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