fun 与funny!

fun 可以作形容词，但是一般用作表语，比如：It's fun.这很有趣。

而funny常常能形容名词，例如：It's a funny story. 这个故事很有意思。He is a funny person. 他这个人挺好玩。

至于楼主说的名词可以修饰名词的问题，一般情况下意思会有所区别，要根据具体上下文来选择。

fun story是正确的
e.g. I only get about 5 minutes in front of the computer today so I figured I would do a fun story post. Basically I will start with a sentence and the next person follows with a sentence of their own. You cannot leave consecutive comments and it can only be one sentence and relative to the story at hand.
funny有两个意思，一个是fun好玩，一个是怪异
为了区分，你可以问使用者
Do you mean funny haha or funny peculiar?
你是指有趣还是怪异？

两者含义上有差别：funny 表示“有趣的，滑稽的”，它指的是一种滑稽可笑的“有趣”，侧重点是让人觉得好玩或发笑。而 fun 则主要指“有趣，好玩”，不像funny 那样强调“滑稽”。
比较并体会以下例句：
It is more fun to go with someone than to go alone. 偕伴同去比自己独自去好玩。
It's funny to see a man walk with his hands and head. 看见一个人倒立走路很滑稽

fun story不可以
fun可以做形容词
名词可以修饰名词，比如 an apple tree

fun"供娱乐用的"funny&qu