What is difference between UIModalTransitionStyle and UIModalPresentationStyle ?

For UIVIEwController,we have UIModalTransitionStyle and UIModalPresentationStyle enter link description here

Question is what is the difference of them ?

UIModalTransitionStyle is used to specify how the modal form Transitions into vIEw. For example,it can come in vertically,flip horizontal,or do a partial curl.

UIModalPresentationStyle is used to specifIEd whether you want the modal form to be full screen (basically what iPhone uses) or otherwise (therefore only makes sense for iPad) as a page sheet (full height,wIDth is the size of the portrait mode screen wIDth),a form sheet (partial wIDth and partial height) or current context (i.e. what the parent container uses).