“Warranty” vs. “Guarantee” What’s the difference between warranty and guarantee? A warranty is “a promise or guarantee given.” A warranty is usually a written guarantee for a product, and it holds the maker of the product responsible to repair or replace a defective product or its parts. It is only used as a noun. So, what’s a guarantee? Basically, it’s the promise included in the formal (and legal) warranty. As a noun, guarantee is “an agreement assuming responsibility to perform, execute, or complete something and offering security for that agreement.” It is a promise or an assurance, especially one given in writing, that attests to the quality or durability of a product or service, or a pledge that something will be performed in a specified manner. As a verb, it can assure someone that you have confidence in your product or service. For example: “I guarantee that you’ll love this product or you’ll get your money back!” WATCH: Common Words With Uncommon Opposites Previous Next What’s a guaranty? A guaranty is not in use very much anymore. If it is, it is a noun meaning “an undertaking or promise that is the answer to or payment for a debt or default,” or “something given or held as security until a debt is paid or the performance of a duty is fulfilled.” It you do see it these days, it is probably in a legal or financial document. And, if you were wondering (or wanted to add to your confusion), a warrantee is the person to whom a warranty is made.Take a look at this list if you want to know more about legal terms to seal the deal.