o vs teleprinter

o

character
  • The fifteenth letter of the English alphabet, called o and written in the Latin script. 

noun
  • A zero (used in reading out numbers). 

  • Operator 

  • The name of the Latin-script letter O/o. 

  • Object, see SVO 

adj
  • Over 

teleprinter

noun
  • Synonym of teletype, a telegraph that automatically prints transmited messages in letters rather than Morse code or other symbols. 

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