How to distinguish between "Arranged" and "Remix"

[kt1981]

What exactly is the difference between these two classifications?

[Free.User]

Arranged pieces are ones that are re-done for a different instrumentation or style, whereas Remixes include or overlap elements from multiple different pieces.

[kt1981]

whereas Remixes include or overlap elements from multiple different pieces.

Ah, OK, Megamix- resp. Medley-style. Got it, thanks.

[Secret Squirrel]

Well, technically I'd consider it a remix if it includes the original track in the composition, whether it's actually sampled, or uses the original midi file.