coalition vs synergism

coalition

noun
  • A temporary group or union of organizations, usually formed for a particular advantage. 

  • The collective noun for a group of cheetahs. 

synergism

noun
  • synergy 

  • The theological doctrine that salvation is brought about by a combination of human will and divine grace 

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