rock ‘n’ roll vs samba

rock ‘n’ roll

samba

verb
  • To dance the samba. 

noun
  • A Brazilian ballroom dance or dance style. 

  • A Brazilian musical genre, to which the aforementioned dance is danced, which has its roots in West Africa via the slave trade. 

How often have the words rock ‘n’ roll and samba occurred in a corpus of books? (source: Google Ngram Viewer )