extremely vs extreme

extremely is not a noun while extreme is a noun.

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

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

extremely (adjective)	extreme (adjective)
	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

extremely (adverb)	extreme (adverb)
to an extreme degree
to a high degree or extent; favorably or with much respect