get on vs prepone

get on

verb
  • To become late. 

  • To handle, cope or manage (over time); to perform or make progress. 

  • To board or mount (something), especially a vehicle. 

  • To have a good relationship; to get along. 

  • To commence (an action). 

  • To become old. 

  • To progress (with). 

intj
  • Expresses surprise or disbelief. 

prepone

verb
  • To reschedule to a time earlier than the current scheduled time. 

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