nebular vs nebulous

nebular and nebulous both are adjectives.

Word	Noun	Adjective	Verb	Adverb
nebular	No	Yes	No	No
nebulous	No	Yes	No	No

As adjectives, nebular and nebulous are synonyms defined as:

nebular (adjective)	nebulous (adjective)
of or relating to or resembling a nebula	of or relating to or resembling a nebula
resembling a cloud	lacking definition or definite content
	lacking definite form or limits