uninflected vs linguistics

uninflected is not a noun while linguistics is a noun.

Word	Noun	Adjective	Verb	Adverb
uninflected	No	Yes	No	No
linguistics	Yes	No	No	No

uninflected (noun)	linguistics (noun)
	the scientific study of language
	the humanistic study of language and literature

uninflected (adjective)	linguistics (adjective)
(of the voice) not inflected
not inflected
expressing a grammatical category by using two or more words rather than inflection