swearword vs oath

swearword and oath both are nouns.

Word	Noun	Adjective	Verb	Adverb
swearword	Yes	No	No	No
oath	Yes	No	No	No

As nouns, swearword and oath are synonyms defined as:

swearword and oath: profane or obscene expression usually of surprise or anger

Other synonyms of swearword include curse, curse word, cuss, expletive, swearing.

swearword (noun)	oath (noun)
profane or obscene expression usually of surprise or anger	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
	a solemn promise, usually invoking a divine witness, regarding your future acts or behavior