perpendicular vs normal

perpendicular and normal both are nouns.

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

perpendicular (noun)	normal (noun)
an extremely steep face	something regarded as a normative example
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
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)	normal (adjective)
intersecting at or forming right angles	conforming with or constituting a norm or standard or level or type or social norm; not abnormal
at right angles to the plane of the horizon or a base line	in accordance with scientific laws
so steep as to be nearly vertical	being approximately average or within certain limits in e.g. intelligence and development
	forming a right angle