crippling vs deficient

crippling

noun
  • State of being crippled; lameness. 

  • Spars or timbers set up as a support against the side of a building. 

adj
  • That cripples or incapacitates 

  • Causing serious injuries, damage, or harm; damaging. 

  • Causing a severe and insurmountable problem; detrimental. 

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). 

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