negligible vs twopenny

negligible

adj
  • Able to be neglected, ignored or excluded from consideration; too small or unimportant to be of concern. 

twopenny

adj
  • Cheap; worthless; petty. 

  • Having a value or cost of twopence. 

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