Decouple vs Uncouple - What's the difference?

In transitive terms the difference between decouple and uncouple

is that decouple is to unlink; to take apart while uncouple is to come loose.

(wikipedia decouple)

to unlink; to take apart

Radiation decoupled from matter

(uncoupl)

To disconnect or detach one thing from another.

* We uncoupled the trailer and left it behind

To come loose.

To loose, as dogs, from their couples.