Biologically, pineapple and pineapple is actually the same kind of fruit, just different regions, called different, generally in Taiwan, Fujian are called pineapple, and in Hong Kong are called pineapple, and in Singapore, Malaysia called yellow pear.
The second: the difference in appearance
Pineapple and pineapple, although it is the same creature, but pineapple is generally larger than pineapple, pineapple average weight of 3-5 pounds, while pineapple only about 2-3 pounds. In addition to the difference in weight, there is also a difference in their peels, pineapple skin pieces look very small, while the pineapple on the skin pieces are larger, and also very full.
The third: the difference in taste and flavor
Pineapple eating very astringent, must be used to soak in salt water or baking soda to eat, and pineapple peeled is directly edible, pineapple astringent flavor is obviously less than pineapple, and eat a little bit of pineapple, will not feel the astringent taste.