crumb vs molecule

crumb

noun
  • A bit, small amount. 

  • A mixture of sugar, cocoa and milk, used to make industrial chocolate. 

  • A nobody; a worthless person. 

  • A small piece of other material, such as rubber. 

  • A body louse (Pediculus humanus). 

  • The soft internal portion of bread, surrounded by crust. 

  • A small piece which breaks off from baked food (such as cake, biscuit or bread). 

verb
  • To cover with crumbs. 

  • To break into crumbs or small pieces with the fingers; to crumble. 

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 crumb and molecule occurred in a corpus of books? (source: Google Ngram Viewer )