discordant vs subnormal

discordant

adj
  • Serodiscordant. 

  • Not in harmony or accord. 

  • Of opposite sign. 

  • Harsh or dissonant-sounding. 

  • Of a differing type of rock cutting across a formation. 

subnormal

adj
  • denormal 

  • Less than normal. 

noun
  • A person whose abilities are less than normal. 

  • That part of the axis of a curved line which is intercepted between the ordinate and the normal. 

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