barren vs pregnant

barren

noun
  • An area of low fertility and habitation, a desolate place. 

adj
  • Unable to bear children; sterile. 

  • Of poor fertility, infertile; not producing vegetation. 

  • Mentally dull; stupid. 

  • Bleak. 

  • Unproductive; fruitless; unprofitable; empty. 

pregnant

adj
  • Of a couple: expecting a baby together. 

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

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

  • Carrying developing offspring within the body. 

noun
  • A pregnant woman. 

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