mosh vs slam-dance

mosh

noun
  • The moshing style of dancing. 

verb
  • To intentionally jump into and collide with another, similarly behaving dancer at a concert. 

  • To dance by intentionally jumping into and colliding with other, similarly behaving dancers, and performing other wild, aggressive, or spastic movements. 

slam-dance

noun
  • A form of dancing where participants intentionally collide. 

verb
  • To dance in this style. 

How often have the words mosh and slam-dance occurred in a corpus of books? (source: Google Ngram Viewer )