deficient vs petty

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. 

petty

adj
  • Having little or no importance. 

  • Of or relating to the lowest grade or level of school; junior, primary. 

  • Little or small in size. 

  • Of persons or their behaviour: marked by or reflective of undesirably limited interests, sympathies, or views; begrudging, selfish, small-minded; also, preoccupied with subjects having little or no importance and not mindful of broader concerns. 

  • Secondary in importance or rank; minor, subordinate. 

noun
  • An outbuilding used as a lavatory; an outhouse, a privy. 

  • A class or school for young schoolboys. 

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