I'd like to buy both of them. False weights and measures. This is another form of deception that is outright theft. The old butcher would keep his thumb on the scale when he weighed the meat. Taking money under the table.
Fraud is outright theft.
It's sad to see the number of Christians who take money under the table and do not report it. Damage or diminish another's goods through carelessness. If you borrow something and through carelessness reduce the value of the item, that is theft. I've heard of people who will buy a dress for a party, wear it and the next day return it to the store saying that it is unsatisfactory. Misrepresentation of an Opportunity.