condom vs love glove

condom

noun
  • A flexible sleeve made of latex or other impermeable material such as sheepskin, worn over an erect penis during sexual intercourse as a contraceptive or as a way to prevent the spread of STDs. 

love glove

noun
  • A condom. 

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