coefficient vs synergic

coefficient

adj
  • Cooperating. 

noun
  • A constant by which an algebraic term is multiplied. 

  • A number, value, or item that serves as a measure of some property or characteristic. 

synergic

adj
  • Of or pertaining to synergy; synergistic 

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