oath vs profanity

oath and profanity both are nouns.

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

As nouns, profanity is a hypernym of oath; that is, profanity is a word with a broader meaning than oath:

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