matted vs matt

matted is not a noun while matt is a noun.

Word	Noun	Adjective	Verb	Adverb
matted	No	Yes	No	No
matt	Yes	Yes	No	No

As adjectives, matted and matt are synonyms defined as:

Other synonyms of matted include flat, mat, matte.

matted (noun)	matt (noun)
	the property of having little or no contrast; lacking highlights or gloss

matted (adjective)	matt (adjective)
not reflecting light; not glossy	not reflecting light; not glossy
tangled in a dense mass