Durex vs condom

Durex

noun
  • A condom. 

  • Adhesive tape. 

name
  • A brand of condom. 

  • A brand of adhesive tape. 

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. 

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