privative vs unfit

privative

adj
  • consisting in the absence of something; negative 

  • causing privation; depriving 

  • indicating the absence of something 

noun
  • something that causes privation or indicates an absence 

unfit

adj
  • Unsuitable for a particular purpose. 

  • Not fit; not having the correct requirements. 

  • Not fit, not having a good physical demeanor. 

verb
  • To make unfit; to render unsuitable, spoil, disqualify. 

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