fecund vs postpartum

fecund

adj
  • Highly fertile; able to produce offspring. 

  • Leading to new ideas or innovation. 

postpartum

adj
  • Of a mother: after giving birth (often defined as within 30 days after childbirth). 

adv
  • After giving birth. 

noun
  • The period immediately following childbirth. 

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