different ,difficult ,difference是什么意思？ 不同的，困难的，差别

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是形容词，“不同的”。difference是它的名词，“不同之处，差别”。
difficult也是形容词，“困难的”。difficulty是它的名词“困难”。