conceal vs obscure

conceal is not an adjective while obscure is an adjective.

Word	Noun	Adjective	Verb	Adverb
conceal	No	No	Yes	No
obscure	No	Yes	Yes	No

As verbs, obscure is a hyponym of conceal; that is, obscure is a word with a more specific, narrower meaning than conceal:

conceal (adjective)	obscure (adjective)
	difficult to find
	marked by difficulty of style or expression
	not drawing attention
	not famous or acclaimed
	not clearly expressed or understood
	remote and separate physically or socially

conceal (verb)	obscure (verb)
hold back; keep from being perceived by others	make unintelligible or unclear
prevent from being seen or discovered	make undecipherable or imperceptible by obscuring or concealing
	reduce a vowel to a neutral one, such as a schwa
	make unclear, indistinct, or blurred
	make less visible or unclear