noun (plural warranties) a written guarantee, issued to the purchaser of an article by its manufacturer, promising to repair or replace it if necessary within a specified period of time:
ー オックスフォード英英辞典より引用
例文
All of this equipment is second hand, but warranties are offered.
こちらの商品は全て中古品ですが、保証はしっかりとついています。
If the car is still under warranty, they will replace the broken part for free.
verb [with object] Arrange for compensation in the event of damage to or loss of (property), or injury to or the death of (someone), in exchange for regular advance payments to a company or government agency:
ー オックスフォード英英辞典より引用
例文
It is important to insure your property against typhoon damage.
台風被害に備えて保険に入ることは重要なことです。
People insure their money against theft by depositing it in a bank.