* court
n. 法庭，法院
court of law
法庭，法院
court case
诉讼案件
appear in court
出庭
go to court
起诉，打官司

* courteous
a. 有礼貌的
The staff are always courteous and helpful.
员工们总是彬彬有礼、乐于助人。
* courtesy
n. 有礼的举止，礼貌
It's a matter of common courtesy to acknowledge letters.
确认收到来信是最起码的礼貌。