preposition vs linguistics

preposition and linguistics both are nouns.

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

preposition (noun)	linguistics (noun)
a function word that combines with a noun or pronoun or noun phrase to form a prepositional phrase that can have an adverbial or adjectival relation to some other word	the scientific study of language
(linguistics) the placing of one linguistic element before another (as placing a modifier before the word it modifies in a sentence or placing an affix before the base to which it is attached)	the humanistic study of language and literature