a cappella vs jazz

a cappella

noun
  • A vocal performance with no instrumental accompaniment. 

adj
  • Singing solely or mainly without instrumental accompaniment. 

  • Related to a form of purely vocal music mostly associated with American college performance groups. 

adv
  • In a manner of a choir with no instrumental accompaniment; literally, "in the style of the (Sistine) Chapel (in Rome)", such as a musical Mass done a cappella. 

jazz

noun
  • A musical art form rooted in West African cultural and musical expression and in the African American blues tradition, with diverse influences over time, commonly characterized by blue notes, syncopation, swing, call and response, polyrhythms and improvisation. 

  • Something of excellent quality, the genuine article. 

  • The substance or makeup of a thing; unspecified thing(s). 

  • Semen, jizz. 

  • Energy, excitement, excitability. 

  • Nonsense. 

verb
  • To play (jazz music). 

  • To destroy. 

  • To complicate. 

  • To move (around/about) in a lively or frivolous manner; to fool around. 

  • To distract or pester. 

  • To ejaculate. 

  • To enliven, brighten up, make more colourful or exciting; excite 

  • To dance to the tunes of jazz music. 

How often have the words a cappella and jazz occurred in a corpus of books? (source: Google Ngram Viewer )