primal vs seminal

primal

adj
  • Of greatest importance; primary. 

  • Being the first in time or in history. 

  • Being one of the pieces of meat initially separated from the carcass during butchering, prior to division into smaller cuts. 

verb
  • To take part in primal therapy. 

noun
  • A primal cut (of meat). 

seminal

adj
  • Highly influential, especially in some original way, and providing a basis for future development or research. 

  • Of or relating to seed or semen. 

  • Creative or having the power to originate. 

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