obscure vs conceal

obscure is an adjective but conceal is not an adjective.

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

As verbs, conceal is a hypernym of obscure; that is, conceal is a word with a broader meaning than obscure:

Other hypernyms of obscure include hide.

obscure (adjective)	conceal (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

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