acceptable vs linguistics

acceptable is not a noun while linguistics is a noun.

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

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

acceptable (adjective)	linguistics (adjective)
worthy of acceptance or satisfactory
adequate for the purpose
meeting requirements
judged to be in conformity with approved usage