paving vs tarmac

paving and tarmac both are nouns.

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

As nouns, tarmac is a hyponym of paving; that is, tarmac is a word with a more specific, narrower meaning than paving:

paving: material used to pave an area
tarmac: a paving material of tar and broken stone; mixed in a factory and shaped during paving

Other hyponyms of paving include asphalt, concrete, blacktop, blacktopping, macadam, tarmacadam.

paving (noun)	tarmac (noun)
the act of applying paving materials to an area	a paved surface having compressed layers of broken rocks held together with tar
the paved surface of a thoroughfare	a paving material of tar and broken stone; mixed in a factory and shaped during paving
material used to pave an area

paving (verb)	tarmac (verb)
	surface with macadam