gravity fault vs common fault

gravity fault and common fault both are nouns.

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

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

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

Other synonyms of gravity fault include normal fault.

gravity fault (noun)	common 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