swan vs assert

swan is a noun but assert is not a noun.

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

As verbs, swan and assert are synonyms defined as:

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

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

swan (verb)	assert (verb)
to declare or affirm solemnly and formally as true	postulate positively and assertively
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	state categorically
	insist on having one's opinions and rights recognized