raga vs urge to merge

raga

noun
  • Passion, love, lust. 

  • Any of various melodic forms used in Indian classical music, or a piece of music composed in such a form. 

urge to merge

noun
  • A strong desire to form intense emotional connections, stereotypically associated with lesbians. 

How often have the words raga and urge to merge occurred in a corpus of books? (source: Google Ngram Viewer )