warranty

保証

一定期間内に決められた不具合が出たら、製品を修理や交換すると約束すること。

やさしい英語で： A promise to repair or replace a product if it develops certain problems within a set time.

• The phone comes with a warranty.
• Is this repair covered under warranty?
• Both warranties expire next month.

使い方： warranty on something (The warranty on this phone lasts two years.)

類義語： guarantee

よく使う表現： under warranty, extended warranty, warranty period

保証

品物や事実について、契約で明示または暗黙に約束され、法的な効力がある保証。

やさしい英語で： A legally binding promise about goods or facts, stated directly or understood from an agreement.

• The contract contains an express warranty.
• The buyer claimed a breach of warranty.
• An implied warranty may apply even without a written promise.

類義語： guarantee

よく使う表現： implied warranty, express warranty, breach of warranty

保証、確約

あることが実現する、または義務が果たされるという約束。

やさしい英語で： A promise that something will happen or that an obligation will be met.

• They offered a warranty of performance.
• No warranty of success was given.
• The agreement includes a warranty that all obligations will be met.

使い方： warranty that… (They gave a warranty that the agreed work would be completed.)

類義語： guarantee, assurance

よく使う表現： warranty of success, give a warranty