An outdoor area attached to a house or building, often with plants, stones, or a pond; a garden or yard.
週末に庭の草むしりをした。
I pulled weeds in the garden over the weekend.
日本庭園の静かな庭を歩いてリラックスした。
I walked through the tranquil garden of a Japanese garden and relaxed.
子どもたちは庭でボール遊びをしている。
The children are playing ball in the yard.
A field or area of activity; figuratively used to indicate someone's domain or sphere of influence (e.g., 'someone's turf').
この町の飲食業は彼の庭のようだ。
The restaurant business in this town seems to be his turf.
その技術分野は彼の庭（＝得意分野）だ。
That technical field is his specialty (his domain).