obscurity vs abstruseness

obscurity and abstruseness both are nouns.

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

As nouns, obscurity and abstruseness are synonyms defined as:

obscurity and abstruseness: the quality of being unclear or abstruse and hard to understand

Other synonyms of obscurity include obscureness, reconditeness.

obscurity (noun)	abstruseness (noun)
the quality of being unclear or abstruse and hard to understand	the quality of being unclear or abstruse and hard to understand
an obscure and unimportant standing; not well known	wisdom that is recondite and abstruse and profound
the state of being indistinct or indefinite for lack of adequate illumination