oblique vs nominative

oblique and nominative both are nouns.

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

oblique (noun)	nominative (noun)
a diagonally arranged abdominal muscle on either side of the torso	the category of nouns serving as the grammatical subject of a verb
any grammatical case other than the nominative

oblique (adjective)	nominative (adjective)
slanting or inclined in direction or course or position--neither parallel nor perpendicular nor right-angled	serving as or indicating the subject of a verb and words identified with the subject of a copular verb
indirect in departing from the accepted or proper way; misleading	appointed by nomination
	named; bearing the name of a specific person