insignificant vs minimal

insignificant

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

  • Without meaning; not signifying anything. 

minimal

adj
  • The smallest possible amount, quantity, or degree. 

  • Characterised by the use of simple form or structures. 

  • Characterised by the repetition and gradual alteration of short phrases. 

noun
  • Something very small; a tiny part or fragment. 

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