frequentative vs recurring

frequentative

adj
  • Serving to express repetition of an action. 

noun
  • Any of a subclass of imperfective verbs that denote a repeated action, no longer productive in English, but found in e.g. Finnish, Latin, Russian, and Turkish. 

recurring

adj
  • Happening or occurring frequently, with repetition. 

  • Of a decimal: having a set of digits that is repeated indefinitely. 

noun
  • A recurrence; a coming round again. 

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