roofing vs slating

roofing and slating both are nouns.

Word	Noun	Adjective	Verb	Adverb
roofing	Yes	No	No	No
slating	Yes	No	No	No

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

roofing (noun)	slating (noun)
the craft of a roofer	the act of laying slates for a roof
material used to construct a roof	a severely critical attack
	thin layers of rock used for roofing