subnormal vs wacko

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. 

wacko

noun
  • An amusingly eccentric or irrational person. 

adj
  • Amusingly eccentric or irrational. 

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