devour vs pig

devour is not a noun while pig is a noun.

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

As verbs, devour and pig are synonyms defined as:

Other synonyms of devour include guttle, raven.

devour (noun)	pig (noun)
	domestic swine
	a crude block of metal (lead or iron) poured from a smelting furnace
	mold consisting of a bed of sand in which pig iron is cast
	a person regarded as greedy and pig-like
	uncomplimentary terms for a policeman
	a coarse obnoxious person

devour (verb)	pig (verb)
eat greedily	give birth to (piglets)
eat up completely, as with great appetite	eat greedily
to consume	live like a pig, in squalor
enjoy avidly