As adjectives the difference between uniform and overall
is that
uniform is unvarying; all the same while
overall is all-encompassing, all around.
As nouns the difference between uniform and overall
is that
uniform is a distinctive outfit that serves to identify members of a group while
overall is a garment worn over other clothing to protect it; a coverall or boiler suit. A garment, for manual labor or for casual wear, often made of a single piece of fabric, with long legs and a bib upper, supported from the shoulders with straps, and having several large pockets and loops for carrying tools.
As a verb uniform
is to clothe in a uniform.
As an adverb overall is
generally; with everything considered.