For example CEGUI::Editbox should be EditBox Combobox - ComboBox Checkbox - CheckBox Groupbox - GroupBox Listbox - ListBox
This would have to be refactored in c++ code, but also changed in the different looknfeels / schemes / layouts for the widgets.
Otherwise it would make no sense why it is RadioButton and PushButton or ComboDropList, for example. This could be done for 0.8 to break more things.
However Popup and Tooltip feel correct as they are.