heating vs building

heating and building both are nouns.

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

heating (noun)	building (noun)
utility to warm a building	the act of constructing something
the process of becoming warmer; a rising temperature	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