fuddle vs vex

fuddle is a noun but vex is not a noun.

Word	Noun	Adjective	Verb	Adverb
fuddle	Yes	No	Yes	No
vex	No	No	Yes	No

As verbs, vex is a hyponym of fuddle; that is, vex is a word with a more specific, narrower meaning than fuddle:

fuddle (noun)	vex (noun)
a confused multitude of things

fuddle (verb)	vex (verb)
be confusing or perplexing to; cause to be unable to think clearly	be a mystery or bewildering to
consume alcohol	subject to prolonged examination, discussion, or deliberation
make stupid with alcohol	change the arrangement or position of
	cause annoyance in; disturb, especially by minor irritations
	disturb the peace of mind of; afflict with mental agitation or distress