hard surface vs pave

hard surface is not a noun while pave is a noun.

Word	Noun	Adjective	Verb	Adverb
hard surface	No	No	Yes	No
pave	Yes	No	Yes	No

As verbs, pave is a hypernym of hard surface; that is, pave is a word with a broader meaning than hard surface:

hard surface: cover with asphalt or a similar surface
pave: cover with a material such as stone or concrete to make suitable for vehicle traffic

hard surface (noun)	pave (noun)
	a setting with precious stones so closely set that no metal shows

hard surface (verb)	pave (verb)
cover with asphalt or a similar surface	cover with a material such as stone or concrete to make suitable for vehicle traffic