Differences betwen collision, and overlapping?

[N64Mario]

Are there any real differences between collision with object/backdrop and overlapping object/backdrop?

From what I could tell from experimenting, in terms of platforming, they seem like they to about the same things. For example, if you tell player collides with backdrop, or player overlapping backdrop, you tell it to stop. It pretty much does the same thing.

I want to know if there are any significant differences between the two, or if they really are the same thing. The only difference I could tell is one of them only activates once on loop (collides with backdrop), and the other is always (overlapping)? Although with overlapping you could add a limit condition to limit one action when event loops, which kind of makes it go back to collides with backdrop? So I really don't know if there are any real significant differences between these, as fasr as I can tell.

[Nifflas]

The "on collision" condition only triggers once when an object collides. An overlap check triggers on every frame when an object is overlapping another, not just when they collide.