Unstacks vs Untacks - What's the difference?

As verbs the difference between unstacks and untacks

is that unstacks is third-person singular of unstack while untacks is third-person singular of untack.

(head)

(unstack)

(en verb)

To remove from a stack.

* *

(head)

(untack)

* *

(en verb)

To unfasten (something tacked).

To remove the tack from.