rudimentary vs subnormal

rudimentary

adj
  • Basic; minimal; with less than, or only the minimum, necessary. 

  • Of or relating to one or more rudiments. 

noun
  • One of the rudimentary mammae of boars. 

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