subnormal vs underprivileged

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. 

underprivileged

noun
  • A deprived person; deprived people (normally used as a plural). 

adj
  • Deprived of the opportunities and advantages of others, usually through no fault of one's own. 

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