oath vs bayat

oath and bayat both are nouns.

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

As nouns, bayat is a hyponym of oath; that is, bayat is a word with a more specific, narrower meaning than oath:

oath: a solemn promise, usually invoking a divine witness, regarding your future acts or behavior
bayat: an oath of allegiance to an emir

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