This short movie has a great explanation between a democracy & a republic. http://www.youtube.com/watch?v=KFXuGIpsdE0 fun
The term democracy is used quite often - it purports to signify 'government by the people'... There are however other questions that are relevant when talking of democracy: - who gets to vote. In ancient Greece and during the Roman Republic, only citizens that owned land, and could read an write were allowed to vote. Even in the elections held in the early American Colonies. Voters that have a 'conflict of disinterest' in the government may vote differently then ...