hip-hop vs tremor

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. 

tremor

noun
  • A shake, quiver, or vibration. 

  • An earthquake. 

  • A rhythmic, uncontrollable shaking of all or part of the body due to partial muscle contractions. 

verb
  • To shake or quiver excessively and rapidly or involuntarily; to tremble. 

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