commuter vs tripper

commuter

noun
  • One who commutes (etymology 1). 

  • To and from work and home. 

  • Using public transport. 

  • Normally a short form of commuter rail, commuter train or commuter bus; A transport system or a vehicle in such systems used to transport commuters (#2) 

tripper

noun
  • One who trips or stumbles. 

  • A person experiencing a hallucinogenic trip. 

  • A tourist. 

  • Synonym of tripman 

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