subnormal vs underling

subnormal

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. 

adj
  • denormal 

  • Less than normal. 

underling

noun
  • A low, wretched person. 

  • A subordinate, or person of lesser rank or authority. 

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