bop vs hip-hop

bop

verb
  • To dance to this music, or any sort of music with a marked beat. 

  • To walk the streets while socializing. 

  • To have sex. 

  • To strike gently or playfully. 

  • To fellate. 

noun
  • A very light smack, blow or punch. 

  • A party hosted by a college's JCR or MCR. 

  • A style of improvised jazz from the 1940s. 

  • A good song. 

hip-hop

verb
  • To perform hip-hop music. 

  • To move by hopping or with a hopping motion. 

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

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

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