What do sales mean?

Bottom line Sales is to acheive Target.

Contract involving transfer of the possession and ownership (title) of a good or property, or the entitlement to a service, in exchange for money or value. Essential elements that must be present in a valid sale are (1) competence of both the buyer and seller to enter into a contract, (2) mutual agreement on the terms of exchange, (3) a thing capable of being transferred, and (4) a consideration in money (or its equivalent) paid or promised

The process of exchanging your product for the money the customer has.

Sales is the process of persuading your targeted customer to purchase the product or sercive of the company.