petty vs trivial

petty

adj
  • Having little or no importance. 

  • Of or relating to the lowest grade or level of school; junior, primary. 

  • Little or small in size. 

  • Of persons or their behaviour: marked by or reflective of undesirably limited interests, sympathies, or views; begrudging, selfish, small-minded; also, preoccupied with subjects having little or no importance and not mindful of broader concerns. 

  • Secondary in importance or rank; minor, subordinate. 

noun
  • An outbuilding used as a lavatory; an outhouse, a privy. 

  • A class or school for young schoolboys. 

trivial

adj
  • Ignorable; of little significance or value. 

  • Commonplace, ordinary. 

  • Pertaining to the trivium. 

  • Relating to or designating the name of a species; specific as opposed to generic. 

  • Self-evident. 

  • Concerned with or involving trivia. 

  • Of, relating to, or being the simplest possible case. 

  • Indistinguishable in case of truth or falsity. 

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