1A written contract or agreement document that records terms between parties, typically signed or sealed to formalize the agreement.
契約書に署名する前に条項をよく確認してください。
Please check the terms carefully before signing the contract.
契約書は両者が保管できるように二部作成された。
Two copies of the contract were prepared so each party could keep one.
言葉だけの約束ではなく、重要な取り決めは契約書に残すべきだ。
Important agreements should be put into a contract rather than relying on verbal promises.