chopped vs on the wagon

chopped

adj
  • Having a vehicle's height reduced by horizontal trimming of the roofline. 

  • Fired from a job or cut from a team or training program; having got the chop. 

  • Ground, having been processed by grinding. 

  • Cut or diced into small pieces. 

  • High on drugs. 

on the wagon

prep
  • Abstaining from drinking any alcoholic drink, usually in the sense of having given it up (as opposed to never having partaken); teetotal. 

  • Used other than figuratively or idiomatically: see on, the, wagon. 

  • Maintaining a program of self-improvement or abstinence from some other undesirable habit. 

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