eros vs urge to merge

eros

noun
  • Physical love; sexual desire. 

  • A winged figure of a child representing love and/or its power. 

  • a type of love that seeks fulfillment without violation or something else. 

  • libido 

  • collective instincts for self-preservation; life drive. 

urge to merge

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

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