immoderate vs extreme

immoderate is not a noun while extreme is a noun.

Word	Noun	Adjective	Verb	Adverb
immoderate	No	Yes	No	No
extreme	Yes	Yes	No	No

immoderate (noun)	extreme (noun)
	the furthest or highest degree of something
	the point located farthest from the middle of something

immoderate (adjective)	extreme (adjective)
beyond reasonable limits	most distant in any direction
	far beyond a norm in quantity or amount or degree; to an utmost degree
	of the greatest possible degree or extent or intensity
	beyond a norm in views or actions