wordless vs mute

wordless is not a noun while mute is a noun.

Word	Noun	Adjective	Verb	Adverb
wordless	No	Yes	No	No
mute	Yes	Yes	Yes	No

As adjectives, wordless and mute are synonyms defined as:

Other synonyms of wordless include silent, tongueless, unspoken.

wordless (noun)	mute (noun)
	a device used to soften the tone of a musical instrument
	a deaf person who is unable to speak

wordless (adjective)	mute (adjective)
expressed without speech	expressed without speech
	unable to speak because of hereditary deafness

wordless (verb)	mute (verb)
	deaden (a sound or noise), especially by wrapping