aposiopesis vs apostrophe

aposiopesis

noun
  • An abrupt breaking-off in speech, often indicated in print using an ellipsis (…) or an em dash (—). 

apostrophe

noun
  • A sudden exclamatory piece of dialogue addressed to someone or something, especially absent. 

  • The text character ’, which serves as a punctuation mark in various languages and as a diacritical mark in certain rare contexts. 

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