Customer

A customer is someone who purchases or rents something from an individual or organisation.

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The word historically derives from "custom," meaning "habit"; a customer was someone who frequented a particular shop, who made it a habit to purchase goods of the sort the shop sold there rather than elsewhere, and with whom the shopkeeper had to maintain a relationship to keep his or her "custom," meaning expected purchases in the future. The shopkeeper remembered the sizes and preferences of his or her customers, for example. The word did not refer to those who purchased things at a fair or bazaar, or from a street vendor.

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