mute vs wordless

mute is a noun but wordless is not a noun.

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

As adjectives, mute and wordless are synonyms defined as:

Other synonyms of mute include silent, tongueless, unspoken.

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

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

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