primal vs primordial

primal

adj
  • Being the first in time or in history. 

  • Of greatest importance; primary. 

  • 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). 

primordial

adj
  • first, earliest or original 

  • characteristic of the earliest stage of the development of an organism, or relating to a primordium 

  • primeval 

noun
  • A first principle or element. 

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