There is a shortage of land in almost all the big cities in the world so apartments are preferred as compared to homes by most of the middle class peoples. Apartment is a home in an apartment building. Apartment building may contain all the apartment of same size and quality or may be different size apartments. free online classifieds  Homes made on land require large space on land a very less number of people can live in a house, but apartments can save land space as they are built as a building so apartments can save land space. Land space saved by these apartments can be used in some other beneficial projects. Like many other types of business can be started on saved land space.