languish vs fade

languish is not a noun while fade is a noun.

Word	Noun	Adjective	Verb	Adverb
languish	No	No	Yes	No
fade	Yes	No	Yes	No

As verbs, languish and fade are synonyms defined as:

languish (noun)	fade (noun)
	gradually ceasing to be visible
	a golf shot that curves to the right for a right-handed golfer

languish (verb)	fade (verb)
become feeble	become feeble
lose vigor, health, or flesh, as through grief	disappear gradually
have a desire for something or someone who is not present	lose freshness, vigor, or vitality
	become less clearly visible or distinguishable; disappear gradually or seemingly