A/C vs AC

A/C

AC

phrase

  • as charged, as in: guilty as charged, usually a/c. 

noun

  • Companion of the Order of Australia. 

name

  • Aceh, an autonomous province of Indonesia. 

  • Acre, a state of Brazil. 

How often have the words A/C and AC occurred in a corpus of books? (source: Google Ngram Viewer )