oblivion vs obscurity

oblivion and obscurity both are nouns.

Word	Noun	Adjective	Verb	Adverb
oblivion	Yes	No	No	No
obscurity	Yes	No	No	No

As nouns, obscurity is a hypernym of oblivion; that is, obscurity is a word with a broader meaning than oblivion:

oblivion (noun)	obscurity (noun)
total forgetfulness	the quality of being unclear or abstruse and hard to understand
the state of being disregarded or forgotten	an obscure and unimportant standing; not well known
	the state of being indistinct or indefinite for lack of adequate illumination