unblock vs unstuff

unblock and unstuff both are verbs.

Word	Noun	Adjective	Verb	Adverb
unblock	No	No	Yes	No
unstuff	No	No	Yes	No

As verbs, unstuff is a hypernym of unblock; that is, unstuff is a word with a broader meaning than unblock:

Other hypernyms of unblock include loosen up.

unblock (verb)	unstuff (verb)
make (assets) available	cause to become unblocked
play the cards of (a suit) so that the last trick on which a hand can follow suit will be taken by a higher card in the hand of a partner who has the remaining cards of a combined holding
clear or remove an obstruction from