Difference usage of うまい and 上手?


I would like to tell that she is very good in Japanese . Which one is more
suitable to use under sentences ...

[code]

    彼女は日本語が[上手]{jouzu}です。
    
[/code]

or

[code]

    彼女は日本語がうまいです。
    
[/code]

> Can I use both sentences ? Is there no particular differences ?

