blacktopping vs paving

blacktopping and paving both are nouns.

Word	Noun	Adjective	Verb	Adverb
blacktopping	Yes	No	No	No
paving	Yes	No	No	No

As nouns, paving is a hypernym of blacktopping; that is, paving is a word with a broader meaning than blacktopping:

blacktopping: a black bituminous material used for paving roads or other areas; usually spread over crushed rock
paving: material used to pave an area

Other hypernyms of blacktopping include pavement, paving material.

blacktopping (noun)	paving (noun)
a black bituminous material used for paving roads or other areas; usually spread over crushed rock	the act of applying paving materials to an area
	the paved surface of a thoroughfare
	material used to pave an area