What is one main difference between ptolemy's world map and the world map of waldseemuller?

Potelmy's map was based on information by merchants and soldiers who travelled through the Roman Empire. The Ptolemy map is known to Hellenistic society in the 2nd century. Waldseemuller map used information from explorers as well as producing the first map with the label "America". It was the primary guide, printed or original copy, to delineate clearly a separate Western Hemisphere, with the Pacific as a separate ocean.