cummer vs significant other

cummer

noun
  • A female companion or intimate (of another woman). 

  • The relationship of a godmother to the other godparents (godsibs or gossips), and the legal parents, of a child. 

  • Lass, the feminine equivalent of fellow. 

  • One who cums or climaxes. 

significant other

noun
  • A person with whom one has an important bond of some kind. 

  • One's exclusive romantic partner. 

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