go away vs fade

go away is not a noun while fade is a noun.

Word	Noun	Adjective	Verb	Adverb
go away	No	No	Yes	No
fade	Yes	No	Yes	No

As verbs, fade is a hyponym of go away; that is, fade is a word with a more specific, narrower meaning than go away:

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

go away (verb)	fade (verb)
get lost, as without warning or explanation	become feeble
go away from a place	disappear gradually
move away from a place into another direction	lose freshness, vigor, or vitality
become invisible or unnoticeable	become less clearly visible or distinguishable; disappear gradually or seemingly