This is a very plain and easy-to-understand difference between a guarantee and a warranty:
Guarantee means you can return the product if you are unsatisfied, Warranty means you can have the product fixed if damaged Within terms.
— Henry Okelue (@4eyedmonk) January 16, 2014
Guarantee: The product can be returned if you are not happy with it. There doesn’t have to be any faults with it.
Warranty: The product will be fixed if faulty or damaged. Conditions usually apply.
Yes; and the above definitions are good for any product. Now, you know. Say thanks to Henry!