different,difficult,differents,difference的区别

different是形容词
He's a different man from what he was 10 years ago.
他和十年前不一样.
difference是名词
Flowers make no difference to this room.
这房间有没有花没什么区别.
It won't make much difference whether you go today or tomorrow.
你今天或明天去没有多大关系.
differents有这样的词吗,没有!

different是形容词，不同的
difficult是形容词，困难的
difference是名词，不同
differents 似乎没有这个单词吧！！