cocaine vs coke

cocaine

noun
  • Any derivative of cocaine. 

  • An addictive drug derived from coca (Erythroxylum) or prepared synthetically, used sometimes medicinally as a local anesthetic and, often illegally, as a stimulant. 

coke

noun
  • Cocaine. 

  • Solid residue from roasting coal in a coke oven; used principally as a fuel and in the production of steel and formerly as a domestic fuel. 

verb
  • To add deleterious carbon deposits as a byproduct of combustion. 

  • To produce coke from coal. 

  • To turn into coke. 

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