deteriorate vs fatigue

deteriorate is not a noun while fatigue is a noun.

Word	Noun	Adjective	Verb	Adverb
deteriorate	No	No	Yes	No
fatigue	Yes	No	Yes	No

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

Other hyponyms of deteriorate include jade, pall, tire, weary, fade, languish, rot, waste.

deteriorate (noun)	fatigue (noun)
	labor of a nonmilitary kind done by soldiers (cleaning or digging or draining or so on)
	(always used with a modifier) boredom resulting from overexposure to something
	temporary loss of strength and energy resulting from hard physical or mental work
	used of materials (especially metals) in a weakened state caused by long stress

deteriorate (verb)	fatigue (verb)
grow progressively worse	exhaust or get tired through overuse or great strain or stress
become worse or disintegrate	lose interest or become bored with something or somebody