jumpoff vs lover

jumpoff

noun
  • A sexual partner who is more than a one-night stand but with whom one does not intend to form a long-term romantic relationship. 

lover

noun
  • A sexual partner, especially one with whom someone is having an affair. 

  • A person who loves something. 

  • An informal term of address for any friend. 

  • One who loves and cares for another person in a romantic way; a sweetheart, love, soulmate, boyfriend, girlfriend, or spouse. 

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