Ethanol or ethyl alcohol(C2H5OH) is a member of the alcohol family. Not all alcohols are good, methanol(CH3OH) is a good example of a "bad" alcohol. Pretty much any carbon chain with a hydroxyl (OH) on it is an alcohol AFAIK.
When people say alcohol, they usually mean ethanol.
EDIT: To be more precise about the hydroxyl thing, carboxylic acids(COOH) also appear to have a hydroxyl present but they are a different functional group altogether.