subnormal vs subservient

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. 

subservient

adj
  • Obsequiously submissive. 

  • Useful in an inferior capacity. 

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