fundamental vs primal

fundamental

adj
  • essential; extremely important 

  • Related to a foundation. base, or basis; serving as a foundation. 

noun
  • The lowest frequency of a periodic waveform. 

  • A main or major principle, rule, law, etc. which serves as the foundation or basis of a system; an essential part 

  • The lowest partial of a complex tone. 

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 fundamental and primal occurred in a corpus of books? (source: Google Ngram Viewer )