Undue vs Galore - What's the difference?

As adjectives the difference between undue and galore

is that undue is excessive; going beyond that what is natural or sufficient while galore is in abundance.

(en adjective)

Excessive; going beyond that what is natural or sufficient.

To individuals who despise killings in any form, death penalty is undue punishment.

That which ought not to be done; illegal; unjustified.

(of a payment etc) Not owing or payable.

* undueful * undue influence * undueness * unduly

(-)

In abundance.

After the shipwreck there was whisky galore to be had for the taking.

* This adjective always appears after the noun.