A gift or a present is an item given to someone, without the expectation of payment or anything in return. An item is not a gift if that item is already owned by the one to whom it is given. Although gift-giving might involve an expectation of reciprocity, a gift is meant to be free. In many countries, the act of mutually exchanging money, goods, etc. may sustain social relationship and contribute to social cohesion. Economists have elaborated the economics of gift-giving into the notion of a gift economy. By extension, the term gift can refer to any item or act of service that makes the other happier or less sad, especially as a favour, including forgiveness and kindness. Gifts are often presented on occasions such as birthdays and holidays.

Property is a system of rights that gives people legal control of valuable things, and also refers to the valuable things themselves. Depending on the nature of the property, an owner of property may have the right to consume, alter, share, redefine, rent, mortgage, pawn, sell, exchange, transfer, give away, or destroy it, or to exclude others from doing these things, as well as to perhaps abandon it; whereas regardless of the nature of the property, the owner thereof has the right to properly use it under the granted property rights.