grating vs gravelly

grating is a noun but gravelly is not a noun.

Word	Noun	Adjective	Verb	Adverb
grating	Yes	Yes	No	No
gravelly	No	Yes	No	No

As adjectives, grating and gravelly are synonyms defined as:

Other synonyms of grating include rasping, raspy, rough, scratchy.

grating (noun)	gravelly (noun)
a barrier that has parallel or crossed bars blocking a passage but admitting air
a frame of iron bars to hold a fire
optical device consisting of a surface with many parallel grooves in it; disperses a beam of light (or other electromagnetic radiation) into its wavelengths to produce its spectrum

grating (adjective)	gravelly (adjective)
unpleasantly harsh or grating in sound	unpleasantly harsh or grating in sound
	abounding in small stones