countess vs rajah

countess

noun
  • The wife of a count or earl. 

  • A woman holding the rank of count or earl in her own right; a female holder of an earldom. 

rajah

noun
  • a Hindu prince or ruler in India. 

  • Any of various nymphalid butterflies of the genus Charaxes. 

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