blacktopping vs blacktop

blacktopping and blacktop both are nouns.

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

As nouns, blacktopping and blacktop are synonyms defined as:

blacktopping and blacktop: a black bituminous material used for paving roads or other areas; usually spread over crushed rock

blacktopping (noun)	blacktop (noun)
a black bituminous material used for paving roads or other areas; usually spread over crushed rock	a black bituminous material used for paving roads or other areas; usually spread over crushed rock

blacktopping (verb)	blacktop (verb)
	coat with blacktop