hip-hop vs thwack

hip-hop

noun
  • A form of popular and dance music featuring strong percussion and a powerful rhythm, usually accompanied by rapping. 

  • An Afro-American urban youth culture based on rap music, breakdancing etc. 

verb
  • To move by hopping or with a hopping motion. 

  • To perform hip-hop music. 

thwack

noun
  • A heavy slapping sound. 

  • The act of thwacking; a strike or blow, especially with a flat implement. 

verb
  • To hit with a flat implement. 

  • To beat. 

  • To fill to overflow. 

How often have the words hip-hop and thwack occurred in a corpus of books? (source: Google Ngram Viewer )