Action vs Activity

[Jupiter]

Hello teachers,

Could you please tell me what the difference between action and activity is?

Thank you in advance

Jupiter

[Conchita]

Action means 'doing', or 'thing done': he is beginning to regret his action.

Activity means 'movement' or 'being active/busy': there is a lot of activity in the street -- there are a great many people coming and going.

Activity also means 'occupation': spare time activities.