1.  activeness(n = noun.state) action, activity - the state of being active; "his sphere of activity"; "he is out of action"
is a kind of state
has particulars: agency, busyness, hum, behavior, behaviour, eructation, eruption, extravasation, operation, overdrive, play, swing
Antonym: inactiveness
Derived forms adjective active₁₄, adjective active₁, adjective active₃, adjective active₁₃, adjective active₆, adjective active₉, adjective active₈, adjective active₄, adjective active₂

2.  activeness(n = noun.attribute) activity - the trait of being active; moving or acting rapidly and energetically; "the level of activity declines with age"
is a kind of trait
has particulars: animation, brio, invigoration, spiritedness, vivification, dynamism, oomph, pizzaz, pizzazz, zing
Antonym: inactiveness
Derived forms adjective active₅, adjective active₇

   The quality of being active; nimbleness; quickness of motion; activity. [1913 Webster]