set aside vs annul

set aside and annul both are verbs.

Word	Noun	Adjective	Verb	Adverb
set aside	No	No	Yes	No
annul	No	No	Yes	No

As verbs, annul is a hypernym of set aside; that is, annul is a word with a broader meaning than set aside:

Other hypernyms of set aside include avoid, invalidate, nullify, quash, void.

set aside (verb)	annul (verb)
make inoperative or stop	cancel officially
give or assign a resource to a particular person or cause	declare invalid
annul (a legal decision)