infertile vs procreant

infertile

adj

  • Not fertile. 

procreant

noun

  • One who, or that which, procreates. 

adj

  • Of or pertaining to procreation; procreative. 

  • That procreates. 

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