Noun

(activities)

The state or quality of being active; nimbleness; agility; vigorous action or operation; energy; active force; as, an increasing variety of human activities.

Something done as an action or a movement.

Something done for pleasure or entertainment, especially one involving movement or an excursion.

* {{quote-magazine, date=2013-06-07, author=David Simpson

, volume=188, issue=26, page=36, magazine=(The Guardian Weekly) , title= Fantasy of navigation , passage=Like most human activities , ballooning has sponsored heroes and hucksters and a good deal in between. For every dedicated scientist patiently recording atmospheric pressure and wind speed while shivering at high altitudes, there is a carnival barker with a bevy of pretty girls willing to dangle from a basket or parachute down to earth.}}

Use (of internet, playstation, bank account etc.).

Noun

(wikipedia engagement) (en noun)

(countable) an appointment, especially to speak or perform

The lecturer has three speaking engagements this week.

(uncountable) connection or attachment

Check the gears for full engagement before turning the handle.

(countable or uncountable) the period of time when marriage is planned or promised

We are enjoying a long engagement , but haven't yet set a date.

In any situation of conflict, an actual instance of active hostilities.

The engagement resulted in many casualties.

(fencing) the point at which the fencers are close enough to join blades, or to make an effective attack during an encounter.

After engagement it quickly became clear which of the fencers was going to prevail .