swan vs verify

swan is a noun but verify is not a noun.

Word	Noun	Adjective	Verb	Adverb
swan	Yes	No	Yes	No
verify	No	No	Yes	No

As verbs, swan and verify are synonyms defined as:

Other synonyms of swan include affirm, assert, aver, avow, swear.

swan (noun)	verify (noun)
stately heavy-bodied aquatic bird with very long neck and usually white plumage as adult

swan (verb)	verify (verb)
to declare or affirm solemnly and formally as true	confirm the truth of
move about aimlessly or without any destination, often in search of food or employment	to declare or affirm solemnly and formally as true
sweep majestically	attach or append a legal verification to (a pleading or petition)
	check or regulate (a scientific experiment) by conducting a parallel experiment or comparing with another standard