boulder vs striptease

boulder

verb
  • To engage in bouldering. 

noun
  • A particle greater than 256 mm in diameter, following the Wentworth scale 

  • A large marble, in children's games. 

  • A session of bouldering; involvement in bouldering. 

  • A large mass of stone detached from the surrounding land. 

striptease

verb
  • To perform a striptease. 

noun
  • The act of slowly taking off one's clothes to sexually arouse the viewer, often accompanied by music and in exchange for money. 

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