Romani vs gyppo

Romani

adj
  • Of or belonging to the Roma people. 

noun
  • A member of the Roma, a nomadic people with origins in India. 

name
  • The Indo-Aryan lect of the Roma people, or one of its sublects (such as Roma, Sinti, Romanichal, etc), closely related to Hindi and Rajasthani. 

gyppo

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