fraud – n. the crime of using dishonest methods to take something valuable from another person
convince – v. make someone believe something is true
capacity – n. the largest amount that a machine or system can handle
prolong – v. make something last longer
kit – n. set of parts a person can use to put something together themselves
warranty – n. a written promise by a company to repair its products if it has a fault
complain – v. to say or write that you are unhappy or not satisfied with something