insignificant vs twopenny

insignificant

adj
  • Without meaning; not signifying anything. 

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

twopenny

adj
  • Cheap; worthless; petty. 

  • Having a value or cost of twopence. 

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