Rom vs tzigane

Rom

noun
  • A member of the Romani people. 

  • A male member of the Romani people who is married and considered respectable amongst the family. 

name
  • A short river in Greater London which flows into the River Thames. 

  • The Romani language. 

  • The ethnic designation used by the Romani people from Eastern Europe. 

adj
  • Romani: of or pertaining to the Roma people. 

tzigane

noun
  • A Hungarian Gypsy (Romani person). 

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