SMS vs announcement

SMS

noun
  • SMS — Seiner Majestät Schiff – literally, "His Majesty's Ship" in German; 

  • A ship prefix for a ship in the navy of the Empire of Germany (usually for the period leading to WWI and WWI) 

verb
  • To send a message on a cell phone. 

announcement

noun
  • An act of announcing, or giving notice. 

  • That which conveys what is announced. 

  • The content which is announced. 

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