water boiling和boiling water的区别？

一样的，只是前者用了形容词后置。

形容词作后置定语的若干场合

一、当形容词修饰something, everything, anything, nothing,somebody, everybody, anybody, nobody, someone, everyone, anyone等不定代词时，该形容词要后置。例如：

There is something wrong with my body. I am not feeling quite myself today. 我的身体出问题了，今天我感觉不太好。

The doctors have tried everything humanly possible to save his life. 医生使用了可能的人道的方法去拯救他的性命。

Mary certainly talks a lot and she's never interested in what anyone else has to say. 玛丽当然说的太多了，她从来对别人需要说的话不感兴趣。

二、形容词性短语作定语时要后置，这时该短语相当于一个定语从句。例如：

The basket full of fruits belongs to the beautiful girl. 装满水果的这个篮子是属于这个漂亮女孩的。

There was nothing big enough to weigh the elephant. 没有任何称足够大，可以称这头大象。

Those brave enough to take the course will certainly learn a lot of useful skills. 那些选修这门课的勇敢的人当然会学到很多有用的技能。

三、由and, or等连接的两个或几个形容词作定语时常后置，从而进一步说明被修饰词的性质或特点，并起强调作用。例如：

I like reading story-books both interesting and instructive.