cracker, biscuit, cookies, cooky有甚么区别？

biscuit 饼干
cookies 曲奇
cracker 士力架
cooky 点心

cracker一般是指比较脆的饼干，如苏打饼干或者威化那类的东西，还有爆竹的意思；biscuit和cookie都是有饼干的意思，前者是英国的说法，后者是美国人的说法。cooky是cookie的原形，现在美国人说cookie比较常见一点，cookies是cooky的复数形式。

It is really hard to describe the difference among them, the best way is to buy the products from supermarket and eat on your own and you will know.