unintelligent vs intelligence

unintelligent is not a noun while intelligence is a noun.

Word	Noun	Adjective	Verb	Adverb
unintelligent	No	Yes	No	No
intelligence	Yes	No	No	No

unintelligent (noun)	intelligence (noun)
	the operation of gathering information about an enemy
	the ability to comprehend; to understand and profit from experience
	information about recent and important events
	secret information about an enemy (or potential enemy)
	a unit responsible for gathering and interpreting information about an enemy

unintelligent (adjective)	intelligence (adjective)
lacking intelligence