assert vs swear

assert and swear both are verbs.

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

As verbs, assert and swear are synonyms defined as:

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

assert (verb)	swear (verb)
postulate positively and assertively	have faith or confidence in
to declare or affirm solemnly and formally as true	make a deposition; declare under oath
state categorically	utter obscenities or profanities
insist on having one's opinions and rights recognized	promise solemnly; take an oath
	to declare or affirm solemnly and formally as true