building vs storey

building and storey both are nouns.

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

building (noun)	storey (noun)
the act of constructing something	a structure consisting of a room or set of rooms at a single position along a vertical scale
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