perfectivities

/ˌpɜrfɪkˈtɪvətiz/
noun
  1. The plural form of perfectivity; multiple instances or types of the quality of being perfective (complete or finished).
    • In her thesis, she compared the perfectivities of Slavic verb systems.
    • The perfectivities of these sentences show whether the actions are completed.
    • The linguist studied the perfectivities of different languages.