linguistics vs aspectual

linguistics is a noun but aspectual is not a noun.

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

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

linguistics (adjective)	aspectual (adjective)
	of or belonging to an aspect (as an aspect of the verb)