pavee vs tripper

pavee

noun
  • A traveller, a member of Ireland's nomadic ethnic minority. 

tripper

noun
  • A tourist. 

  • A person experiencing a hallucinogenic trip. 

  • Synonym of tripman 

  • One who trips or stumbles. 

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