paving vs concrete

paving and concrete both are nouns.

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

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

paving: material used to pave an area
concrete: a strong hard building material composed of sand and gravel and cement and water

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

paving (noun)	concrete (noun)
the act of applying paving materials to an area	a strong hard building material composed of sand and gravel and cement and water
the paved surface of a thoroughfare
material used to pave an area

paving (adjective)	concrete (adjective)
	capable of being perceived by the senses; not abstract or imaginary
	formed by the coalescence of particles

paving (verb)	concrete (verb)
	form into a solid mass; coalesce
	cover with cement