twopenny vs valuable

twopenny

adj
  • Having a value or cost of twopence. 

  • Cheap; worthless; petty. 

valuable

noun
  • A personal possession such as jewellery, of relatively great monetary value. 

adj
  • Having a great value. 

  • Estimable; deserving esteem. 

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