strike-slip fault vs faulting

strike-slip fault and faulting both are nouns.

Word	Noun	Adjective	Verb	Adverb
strike-slip fault	Yes	No	No	No
faulting	Yes	No	No	No

As nouns, faulting is a hypernym of strike-slip fault; that is, faulting is a word with a broader meaning than strike-slip fault:

strike-slip fault: a geological fault in which one of the adjacent surfaces appears to have moved horizontally
faulting: (geology) a crack in the earth's crust resulting from the displacement of one side with respect to the other

Other hypernyms of strike-slip fault include break, fault, fracture, geological fault, shift.

strike-slip fault (noun)	faulting (noun)
a geological fault in which one of the adjacent surfaces appears to have moved horizontally	(geology) a crack in the earth's crust resulting from the displacement of one side with respect to the other