oath vs swearword

oath and swearword both are nouns.

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

As nouns, oath and swearword are synonyms defined as:

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

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

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