avow vs swan

avow is not a noun while swan is a noun.

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

As verbs, avow and swan are synonyms defined as:

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

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

avow (verb)	swan (verb)
to declare or affirm solemnly and formally as true	to declare or affirm solemnly and formally as true
admit openly and bluntly; make no bones about	move about aimlessly or without any destination, often in search of food or employment
	sweep majestically