sordid vs subnormal

sordid

adj
  • Of a dull colour. 

  • Morally degrading. 

  • Dirty or squalid. 

  • Distasteful, ignoble, vile, or contemptible. 

  • Grasping; stingy; avaricious. 

subnormal

adj
  • Less than normal. 

  • denormal 

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 sordid and subnormal occurred in a corpus of books? (source: Google Ngram Viewer )