>>>>Well ... yes and no. "uninterested" means "not interested" as in "... in your topic", whereas "disinterested" means "impartial", as in "... as to which team wins".
>>>>
>>>>The point I was making is that there are many English word pairs like this that are used erroneously.
>>>
>>>And then there are pairs which aren't pairs, just look so. Just try to weed these out. I took mostly verbs, and a few others that I couldn't resist. Not quite sure about some of them - does the second word mean repetition of the first in some way or not.
>>>
>>bar - rebar (what's rebar?)
>
>I think it's something American... some sort of iron bar. Don't know exactly what.
>

Rebar is used inside cement during construction. You've probably seen the stuff when you walk by a construction site.