comma vs hiatus

comma

noun
  • A brief interval. 

  • A difference in the calculation of nearly identical intervals by different ways. 

  • In Ancient Greek rhetoric, a short clause, something less than a colon, originally denoted by comma marks. In antiquity it was defined as a combination of words having no more than eight syllables in all. It was later applied to longer phrases, e.g. the Johannine comma. 

  • The punctuation mark ⟨,⟩ used to indicate a set of parts of a sentence or between elements of a list. 

  • A similar-looking subscript diacritical mark. 

  • Any of various nymphalid butterflies of the genus Polygonia, having a comma-shaped white mark on the underwings, especially Polygonia c-album and Polygonia c-aureum of North Africa, Europe, and Asia. 

  • A delimiting marker between items in a genetic sequence. 

verb
  • To place a comma or commas within text; to follow, precede, or surround a portion of text with commas. 

hiatus

noun
  • An interruption, break or pause. 

  • A gap in a series, making it incomplete. 

  • An opening in an organ. 

  • A gap in geological strata. 

  • A syllable break between two vowels, without an intervening consonant. (Compare diphthong.) 

  • An unexpected break from work. 

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