profanity vs obscenity

profanity and obscenity both are nouns.

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

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

Other hyponyms of profanity include blasphemy, dirty word, filth, smut, vulgarism, curse, curse word, cuss, expletive, oath, swearing, swearword.

profanity (noun)	obscenity (noun)
vulgar or irreverent speech or action	an obscene act
	the trait of behaving in an obscene manner
	an offensive or indecent word or phrase