Yes. Do you have a Chinese dictionary? There are plenty of apps to help with learning Chinese characters too....just a suggestion.

Yes.

yes

1 water 2 something was smuggled（多用于口语，形容某物是被走私而来的：水货，水车） 3 overvalued（形容某物价值没有达标，估价过高而实际很低，即有水分的。例：LBJ的篮球水平很水啊~） 常见的就是这些意思，看语境。

In Taiwan there're other meaning, praise a girl beautiful use this word 水 "well done" use this word 水