raven vs devour

raven is a noun but devour is not a noun.

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

As verbs, raven and devour are synonyms defined as:

Other synonyms of raven include guttle, pig.

raven (noun)	devour (noun)
large black bird with a straight bill and long wedge-shaped tail

raven (verb)	devour (verb)
eat greedily	eat greedily
feed greedily	eat up completely, as with great appetite
prey on or hunt for	to consume
obtain or seize by violence	enjoy avidly