renewing vs restorative

renewing is not a noun while restorative is a noun.

Word	Noun	Adjective	Verb	Adverb
renewing	No	Yes	No	No
restorative	Yes	Yes	No	No

As adjectives, renewing and restorative are synonyms defined as:

Other synonyms of renewing include revitalising, revitalizing, reviving.

renewing (noun)	restorative (noun)
	a device for treating injury or disease
	a medicine that strengthens and invigorates

renewing (adjective)	restorative (adjective)
tending to impart new life and vigor to	promoting recuperation
	tending to impart new life and vigor to