insignificant vs prevailing

insignificant

adj
  • Not significant; not important, inconsequential, or having no noticeable effect. 

  • Without meaning; not signifying anything. 

prevailing

adj
  • Predominant; of greatest force. 

  • Prevalent, common, widespread. 

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