faulting vs crevice

faulting and crevice both are nouns.

Word	Noun	Adjective	Verb	Adverb
faulting	Yes	No	No	No
crevice	Yes	No	No	No

As nouns, crevice is a hypernym of faulting; that is, crevice is a word with a broader meaning than faulting:

faulting: (geology) a crack in the earth's crust resulting from the displacement of one side with respect to the other
crevice: a long narrow cleft

Other hypernyms of faulting include cleft, crack, fissure, scissure.

faulting (noun)	crevice (noun)
(geology) a crack in the earth's crust resulting from the displacement of one side with respect to the other	a long narrow cleft
	a long narrow depression in a surface