nonhierarchical vs ungraded

nonhierarchical and ungraded both are adjectives.

Word	Noun	Adjective	Verb	Adverb
nonhierarchical	No	Yes	No	No
ungraded	No	Yes	No	No

nonhierarchical (adjective)	ungraded (adjective)
not classified hierarchically	not arranged in order hierarchically
	(of roads) not leveled or drained; unsuitable for all year travel