obscureness vs abstruseness

obscureness and abstruseness both are nouns.

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

As nouns, obscureness and abstruseness are synonyms defined as:

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

Other synonyms of obscureness include obscurity, reconditeness.

obscureness (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
the state of being humble and unimportant	wisdom that is recondite and abstruse and profound
the state of being indistinct or indefinite for lack of adequate illumination