comma vs interstice

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. 

interstice

noun
  • A small interval of time free to be spent on activities other than one's primary goal. 

  • A small opening or space between objects, especially adjacent objects or objects set closely together, as between cords in a rope or components of a multiconductor electrical cable or between atoms in a crystal. 

  • An interval of time required by the Roman Catholic Church between the attainment of different degrees of an order. 

  • A fragment of space. 

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