devour vs relish

devour is not a noun while relish is a noun.

Word	Noun	Adjective	Verb	Adverb
devour	No	No	Yes	No
relish	Yes	No	Yes	No

As verbs, relish is a hypernym of devour; that is, relish is a word with a broader meaning than devour:

devour: enjoy avidly
relish: derive or receive pleasure from; get enjoyment from; take pleasure in

Other hypernyms of devour include bask, enjoy, savor, savour.

devour (noun)	relish (noun)
	the taste experience when a savoury condiment is taken into the mouth
	vigorous and enthusiastic enjoyment
	spicy or savory condiment

devour (verb)	relish (verb)
eat greedily	derive or receive pleasure from; get enjoyment from; take pleasure in
eat up completely, as with great appetite
to consume
enjoy avidly