commonplace vs subnormal

commonplace

adj
  • Ordinary; not having any remarkable characteristics. 

noun
  • A platitude or cliché. 

  • A commonplace book. 

  • Something that is ordinary; something commonly done or occurring. 

  • A memorandum; something to be frequently consulted or referred to. 

verb
  • To make a commonplace book. 

  • To enter in a commonplace book, or to reduce to general heads. 

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