swearing vs swear

swearing is a noun but swear is not a noun.

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

swearing (noun)	swear (noun)
a commitment to tell the truth (especially in a court of law); to lie under oath is to become subject to prosecution for perjury
profane or obscene expression usually of surprise or anger

swearing (verb)	swear (verb)
	have faith or confidence in
	make a deposition; declare under oath
	utter obscenities or profanities
	promise solemnly; take an oath
	to declare or affirm solemnly and formally as true