foreclosure properties for sale

what’s the difference between bank foreclosure and short sale from a buyer’s perpective?
I am looking for buying a house in Chicago north suburbs. I see a lot of foreclosure and short sale properties. What’s the difference between them in terms of the precedure of buying. Should I consider them seriously as buying options?
They just take longer on short sales because the bank has to approve the offer. You should consider but only if you are not in a hurry.
