The state or quality of being active; activeness.
The lexical aspect (aktionsart) of verbs or predicates that change over time and have no natural end point.
Something done as an action or a movement.
Something done for pleasure or entertainment, especially one involving movement or an excursion.
The number of radioactive decays per unit time. Unit for it: becquerel or curie
The propery of substances to react with other substances
A setting in action or practicing; employment in the proper mode of activity; exertion; application; use.
Activity intended to improve physical, or sometimes mental, strength and fitness.
The performance of an office, ceremony, or duty.
Any activity designed to develop or hone a skill or ability.
To occupy the attention and effort of; to task; to tax, especially in a painful or vexatious manner; harass; to vex; to worry or make anxious.
To use (a right, an option, etc.); to put into practice.
To exert for the sake of training or improvement; to practice in order to develop.
To perform physical activity for health or training.