building vs erect

building is a noun but erect is not a noun.

Word	Noun	Adjective	Verb	Adverb
building	Yes	No	No	No
erect	No	Yes	Yes	No

building (noun)	erect (noun)
the act of constructing something
the commercial activity involved in repairing old structures or constructing new ones
a structure that has a roof and walls and stands more or less permanently in one place
the occupants of a building

building (adjective)	erect (adjective)
	upright in position or posture
	of sexual organs; stiff and rigid

building (verb)	erect (verb)
	construct, build, or erect
	cause to rise up