Is alloy the same thing as aluminum?

sorry if i sound a little bit dumb but i am looking into getting a bike... and some sites say they have alloy bikes and others say they have aluminum bikes. i just want to get a clear answer.

thanks
Update: sorry if i sound a little bit dumb but i am looking into getting a bike... and some sites say they have alloy bikes and others say they have aluminum bikes. i just want to get a clear answer.

also which would be better maintenance wise; alloy or steel

thanks
11 answers 11