Charts in PowerPoint comprise several individual components that are called chart elements. Some of these elements are Series (and this could be one or more series with values), Categories (again this can be one or more categories), Axes (horizontal, vertical, and in some chart types, a third axis as well), Plot area (the active chart area), Legend, Chart Title, and many more.
Learn about different chart elements in PowerPoint 2011 for Mac.
Categories: charting, office_mac, powerpoint_2011, tutorials