concomitant vs successive

concomitant

adj
  • Of or relating to the grammatical aspect which expresses that a secondary action is occurring simultaneously to the primary action of the statement. 

  • Accompanying; conjoining; attending; concurrent. 

noun
  • An invariant homogeneous polynomial in the coefficients of a form, a covariant variable, and a contravariant variable. 

  • Something happening or existing at the same time. 

successive

adj
  • Of or relating to the grammatical aspect which presupposes the completion of a secondary action as a premise for the primary action of the statement. 

  • Of, or relating to a succession; hereditary. 

  • Coming one after the other in a series. 

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