acute accent vs tittle

acute accent

noun
  • A diacritical mark ( ´ ) that can be placed above a number of letters in many languages of the Latin, Greek and Cyrillic writing systems. 

tittle

noun
  • Any small dot, stroke, or diacritical mark, especially if part of a letter, or if a letter-like abbreviation; in particular, the dots over the Latin letters i and j. 

  • A small, insignificant amount (of something); a modicum or speck. 

verb
  • To chatter. 

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