obscure vs becloud

obscure is an adjective but becloud is not an adjective.

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

As verbs, obscure and becloud are synonyms defined as:

Other synonyms of obscure include befog, cloud, fog, haze over, mist, obnubilate.

obscure (adjective)	becloud (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)	becloud (verb)
make unintelligible or unclear	make less visible or unclear
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