first vs primal

first

adj
  • Most eminent or exalted; most excellent; chief; highest. 

  • Preceding all others of a series or kind; the ordinal of one; earliest. 

  • Of or belonging to a first family. 

noun
  • first base 

  • A first-edition copy of some publication. 

  • A fraction whose (integer) denominator ends in the digit 1. 

  • The first gear of an engine. 

  • Something that has never happened before; a new occurrence. 

  • A first-class honours degree. 

  • The person or thing in the first position. 

adv
  • For the first time. 

  • Before anything else; firstly. 

  • Now. 

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). 

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