A coffee bean is the seed of the coffee plant. It is the stone inside the red or purple fruit of the coffee plant. The fruits, coffee cherries or coffee berries, contain most commonly two stones lying with their flat sides together. The coffee beans consists of mostly endosperm which contains 0.8 - 2.5 % caffeine, a main reason for cultivating the plants. Coffee beans are an important export product for some countries.Coffee beans are botanically not beans. The name derives from Arabic language ( قهوة qahwa - "coffee" and bunn - "berry") and is a Folk etymology and loan translation.

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