noun
social activity
Refers to organized or voluntary activities aimed at contributing to society, such as community service, activism, or nonprofit work.
彼は週末に地域の社会活動に参加している。
He participates in local social activities on weekends.
ボランティア活動 specifically refers to volunteer activities, while 社会活動 is a broader term encompassing any social or community-oriented activity.
Compound of 社会 (society) and 活動 (activity).