mounting vs matting

mounting and matting both are nouns.

Word	Noun	Adjective	Verb	Adverb
mounting	Yes	No	No	No
matting	Yes	No	No	No

As nouns, matting is a hyponym of mounting; that is, matting is a word with a more specific, narrower meaning than mounting:

Other hyponyms of mounting include chassis, mat, mount, setting, passe-partout.

mounting (noun)	matting (noun)
framework used for support or display	a covering of coarse fabric (usually of straw or hemp)
an event that involves rising to a higher point (as in altitude or temperature or intensity etc.)	mounting consisting of a border or background for a picture