Any one give the example OOTB component which contains design Dialog.
so that i can compare the Dialog with Desifn Dialog bases on component.
If you are in AEM 6.4, you can find OOB core components in below paths which has cq:design dialogs
As Ravi mentioned, you can find both dialog and design dialog is available in all core components.
This is path to find: /apps/core/wcm/components
Hope this helps!!