road construction vs building

road construction and building both are nouns.

Word	Noun	Adjective	Verb	Adverb
road construction	Yes	No	No	No
building	Yes	No	No	No

As nouns, building is a hypernym of road construction; that is, building is a word with a broader meaning than road construction:

Other hypernyms of road construction include construction.

road construction (noun)	building (noun)
the construction of roads	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