gravity fault vs normal fault

gravity fault and normal fault both are nouns.

Word	Noun	Adjective	Verb	Adverb
gravity fault	Yes	No	No	No
normal fault	Yes	No	No	No

As nouns, gravity fault and normal fault are synonyms defined as:

gravity fault and normal fault: an inclined fault in which the hanging wall appears to have slipped downward relative to the footwall

Other synonyms of gravity fault include common fault.

gravity fault (noun)	normal fault (noun)
an inclined fault in which the hanging wall appears to have slipped downward relative to the footwall	an inclined fault in which the hanging wall appears to have slipped downward relative to the footwall