perpendicular vs oblique

perpendicular and oblique both are nouns.

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

perpendicular (noun)	oblique (noun)
an extremely steep face	a diagonally arranged abdominal muscle on either side of the torso
a cord from which a metal weight is suspended pointing directly to the earth's center of gravity; used to determine the vertical from a given point	any grammatical case other than the nominative
a Gothic style in 14th and 15th century England; characterized by vertical lines and a four-centered (Tudor) arch and fan vaulting
a straight line at right angles to another line

perpendicular (adjective)	oblique (adjective)
intersecting at or forming right angles	slanting or inclined in direction or course or position--neither parallel nor perpendicular nor right-angled
at right angles to the plane of the horizon or a base line	indirect in departing from the accepted or proper way; misleading
so steep as to be nearly vertical