imperfective vs reiterative

imperfective

noun
  • The imperfective aspect; a verb having this aspect. 

adj
  • Of, relating to or having the properties of the imperfective aspect. 

reiterative

noun
  • A word signifying repeated action. 

adj
  • That involves reiteration. 

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