restore vs refund

restore is not a noun while refund is a noun.

Word	Noun	Adjective	Verb	Adverb
restore	No	No	Yes	No
refund	Yes	No	Yes	No

As verbs, refund is a hypernym of restore; that is, refund is a word with a broader meaning than restore:

Other hypernyms of restore include give back, repay, return.

restore (noun)	refund (noun)
	the act of returning money received previously
	money returned to a payer

restore (verb)	refund (verb)
get or give new life or energy; return to life, regain energy, recuperate	pay back
restore by replacing a part or putting together what is torn or broken
give or bring back
bring back into original existence, use, function, or position
return to its original or usable and functioning condition