noun
volunteer work; community service; voluntary activity
Refers to unpaid service or activities done for the benefit of others or the community, often with a sense of altruism.
See also: 奉仕
週末に地域の奉仕活動に参加した。
I participated in local volunteer work on the weekend.
学生たちは奉仕活動として公園の清掃を行った。
The students cleaned the park as a community service activity.