felt vs mat

felt and mat both are nouns.

Word	Noun	Adjective	Verb	Adverb
felt	Yes	No	Yes	No
mat	Yes	Yes	Yes	No

As verbs, felt and mat are synonyms defined as:

Other synonyms of felt include felt up, mat up, matt-up, matte, matte up.

As verbs, mat is a hypernym of felt; that is, mat is a word with a broader meaning than felt:

Other hypernyms of felt include entangle, snarl, tangle.

felt (noun)	mat (noun)
a fabric made of compressed matted animal fibers	a thick flat pad used as a floor covering
	sports equipment consisting of a piece of thick padding on the floor for gymnastic sports
	a small pad of material that is used to protect surface from an object placed on it
	mounting consisting of a border or background for a picture
	a foundation (usually on soft ground) consisting of an extended layer of reinforced concrete
	the property of having little or no contrast; lacking highlights or gloss
	a mass that is densely tangled or interwoven

felt (adjective)	mat (adjective)
	not reflecting light; not glossy

felt (verb)	mat (verb)
change texture so as to become matted and felt-like	change texture so as to become matted and felt-like
cover with felt	twist together or entwine into a confusing mass
mat together and make felt-like