pavement vs tarmac

pavement and tarmac both are nouns.

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

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

pavement: 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 pavement include asphalt, concrete, blacktop, blacktopping, macadam, tarmacadam.

pavement (noun)	tarmac (noun)
the paved surface of a thoroughfare	a paved surface having compressed layers of broken rocks held together with tar
walk consisting of a paved area for pedestrians; usually beside a street or roadway	a paving material of tar and broken stone; mixed in a factory and shaped during paving
material used to pave an area

pavement (verb)	tarmac (verb)
	surface with macadam