New 2.79 Keyboard Shortcuts

In the dev notes, there is mention of new keyboard shortcuts for key-frame operations. What I’m curious about is a seeming redundancy: what’s the difference between ‘delete keyframe’ and ‘clear keyframe?’ If it’s cleared, isn’t it also deleted? And if it’s deleted, isn’t it also cleared? Or does a cleared keyframe go into a kind of limbo somewhere?

Delete Keyframes operator deletes keyframes available at current frame, selected keyframes.
Clear Keyframes operator deletes all keyframes during whole action period for specified animated setting.

Shortcuts are new but operators are already present in 2.78 under right click menu.

Thanks for clearing that up… no pun intended.