chump change vs molecule

chump change

noun
  • A sum of money considered to be insignificant. 

  • An amount of remuneration, reward, or other monetary recompense considered to be insultingly small. 

molecule

noun
  • A tiny amount. 

  • The smallest particle of a specific element or compound that retains the chemical properties of that element or compound; two or more atoms held together by chemical bonds. 

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