nonparallel vs oblique

nonparallel is not a noun while oblique is a noun.

Word	Noun	Adjective	Verb	Adverb
nonparallel	No	Yes	No	No
oblique	Yes	Yes	No	No

nonparallel (noun)	oblique (noun)
	a diagonally arranged abdominal muscle on either side of the torso
	any grammatical case other than the nominative

nonparallel (adjective)	oblique (adjective)
of or relating to the sequential performance of multiple operations	slanting or inclined in direction or course or position--neither parallel nor perpendicular nor right-angled
(of e.g. lines or paths) not parallel; converging	indirect in departing from the accepted or proper way; misleading