different ,difficult ,difference是什么意思？ 不同的，困難的，差別

different adj. :not like something or someone else, or not like before
difficult adj.: hard to do, understand, or deal with
difference noun.:a way in which two or more people or things are not like each other

different是形容詞，“不同的”。difference是它的名詞，“不同之處，差別”。
difficult也是形容詞，“困難的”。difficulty是它的名詞“困難”。