1. Laws protect people.2. Banks guarantee the integrity of their accounts.3. Warranty is the vendor's offer to stand by their equipment. If the equipment fails, you can ask the vendor to repair it as long as it is under warranty.
 protect guarantee to stand by something
1. 法律保護人民.2. 銀行保障客戶的存款.
He is a doting father who caters to every wim of her daughter.