procrastination vs trifling

procrastination

noun
  • The act of postponing, delaying or putting off, especially habitually or intentionally. 

trifling

noun
  • The act of one who trifles; frivolous behaviour. 

adj
  • Of suspicious character, typically secretive or deceitful; shady. 

  • Trivial, or of little importance. 

  • Idle or frivolous. 

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