coffee bean vs mocha

coffee bean

noun
  • The seed of a tropical plant of the genus Coffea. Prepared by drying, roasting and grinding for making the beverage coffee. 

mocha

noun
  • A dark brown colour, like that of mocha coffee. 

  • An Abyssinian weight, equivalent to a Troy grain. 

  • Any of a number of species of moths in the geometrid subfamily Sterrhinae, many European species having dark brown coloration. 

  • A coffee and chocolate mixed flavour. 

  • A strong Arabian coffee. 

  • A coffee drink with chocolate syrup added, or a serving thereof. 

adj
  • Of a dark brown colour, like that of mocha coffee. 

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