_There are several fruit categorization systems, a simple one has the following six main fruit categories:

1/ Berries:
Small, juicy fruits with thin skins
Highly perishable
Some berries include: blackberries, cranberries, blueberries, red and black raspberries, strawberries, and grapes.

2/ Pits:
Outer skin covering a soft, fleshy fruit
The fruit surrounds a single, hard stone, or pit, which contains the seed
Some pits include: cherries, apricots, nectarines, peaches, and plums

3/ Core:
Central, seed  containing core surrounded by  athick layer of flesh
Some cores include: apples and pears

4/ Citrus Fruits:
Thick outer rind
A thin membrane separates the flesh into segments
Some citrus fruits include: oranges, tangerines, grapefruits, kumquats, lemons, and limes

5/ Melons:
Large, juicy fruits with thick skins and many seeds
Some melons include: cantaloupe, casaba ,honeydew, and watermelon

6/ Tropical Fruits:
Grown in warm climatesand are considered tobe somewhat exotic
Available throughout the world
Some tropical fruits include: avocados, coconut, bananas, figs, dates, guavas, mangoes, papayas, pineapples, pomegranates, and kiwi