revetement vs revetment

revetement and revetment both are nouns.

Word	Noun	Adjective	Verb	Adverb
revetement	Yes	No	No	No
revetment	Yes	No	No	No

As nouns, revetement and revetment are synonyms defined as:

revetement and revetment: a facing (usually masonry) that supports an embankment

Other synonyms of revetement include stone facing.

revetement (noun)	revetment (noun)
a facing (usually masonry) that supports an embankment	a facing (usually masonry) that supports an embankment
	a barrier against explosives