pregnant vs prolific

pregnant

adj
  • Fertile, prolific (usually of soil, ground, etc.). 

  • Of a couple: expecting a baby together. 

  • Having numerous possibilities or implications; full of promise; abounding in ability, resources, etc. 

  • Carrying developing offspring within the body. 

noun
  • A pregnant woman. 

prolific

adj
  • Fertile; producing offspring or fruit in abundance — applied to plants producing fruit, animals producing young, etc. 

  • Similarly producing results or performing deeds in abundance 

  • Of a flower: from which another flower is produced. 

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