Remap vs Reroute - What's the difference?

As verbs the difference between remap and reroute

is that remap is to assign differently; to relabel or repurpose while reroute is to change the route taken by something.

(remapp)

To assign differently; to relabel or repurpose.

:He remapped the variable in the code to hold the value directly, instead of a pointer to the value.

To map again.

:Because the topography and development of the land changed so much in the floods, the region had to be remapped .

(rerout)

To change the route taken by something

We'll have to reroute some buses to avoid the construction work.