What are the differences between the cut and uncut versions of "Naruto" anime (not "Shippuden")? I have watched the cut and uncut versions and haven't really noticed any differences.

What are the big (or even small) differences between each?
Uncut episodes are typically longer, while CN cuts scenes out so they can show commercials. Uncut episodes also have more blood, alcohol, and sexual things in it. For example, the uncut episodes will show Naruto and Sasuke kissing in the beginning of the series, and they take that out on the CN version.
There's a comparison between a US TV version and Japanese TV version. Uncut episodes are most likely same as the Japanese version where it doesn't get censored out. Though, there might be a very slight improvement on the uncut version, probably like the lines touch-up or something, it's very hard to spot with naked eyes.
[US Version]-------------------------------------------------[Japanese/Uncut Version]--------------------------------