Noun

(alacrities)

Eagerness; liveliness; enthusiasm.

* 1837 , , The Pickwick Papers , ch. 12:

"I'll get into the clothes this minute, if they're here," said Sam, with great alacrity .

* 1922 , , The Glimpses of the Moon , ch. 24:

This evening, however, he was struck by the beaming alacrity of the aide-de-camp's greeting.

Promptness; speed.

* 1849 , , "On the Duty of Civil Disobedience":

Yet this government never of itself furthered any enterprise, but by the alacrity with which it got out of its way.

* 1902 , , Heart of Darkness , Part 1:

He had a uniform jacket with one button off, and seeing a white man on the path, hoisted his weapon to his shoulder with alacrity .

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.).