tarmac vs macadam

tarmac and macadam both are nouns.

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

As nouns, tarmac and macadam are synonyms defined as:

tarmac and macadam: a paved surface having compressed layers of broken rocks held together with tar

Other synonyms of tarmac include tarmacadam.

As verbs, tarmac and macadam are synonyms defined as:

Other synonyms of tarmac include macadamise, macadamize.

tarmac (noun)	macadam (noun)
a paved surface having compressed layers of broken rocks held together with tar	a paved surface having compressed layers of broken rocks held together with tar
a paving material of tar and broken stone; mixed in a factory and shaped during paving	broken stone used in macadamized roadways

tarmac (verb)	macadam (verb)
surface with macadam	surface with macadam