double bass vs equipment

double bass

noun
  • The deepest of all male voices. 

  • The largest stringed instrument of the violin family. 

equipment

noun
  • The male genitalia. 

  • The act of equipping, or the state of being equipped, as for a voyage or expedition. 

  • Any items used in equipping something or someone, for example things needed for an expedition or voyage. 

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