The software comes with a 'money-back guarantee'. [=a promise that the money you spend on a product will be returned if the product is not good enough]
We used our house as a 'guarantee' for the loan. [=we said that the bank could take our house if we did not pay back the loan]
There is no 'guarantee' that they will approve the contract. [=there is no way to be sure that they will approve it]
(..) I like this plan. We can start again! Just like the old days! Look. It will be a hard day. But I guarantee you days riding that way... ...there's nothing but salt. At least that way, y'know we might be able to... ... together... (..)2015 Mad Max: Fury Road