a cappella vs apart

a cappella

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. 

adj
  • Singing solely or mainly without instrumental accompaniment. 

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

noun
  • A vocal performance with no instrumental accompaniment. 

apart

adj
  • Having been taken apart; disassembled, in pieces. 

  • Separate, on the side. 

  • Exceptional, distinct. 

prep
  • Apart from. 

adv
  • Aside; away; not included. 

  • separately, exclusively, not together 

  • Placed separately (in regard to space or time). 

  • In or into two or more parts. 

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