linguistics vs descriptor

linguistics and descriptor both are nouns.

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

linguistics (noun)	descriptor (noun)
the scientific study of language	a piece of stored information that is used to identify an item in an information storage and retrieval system
the humanistic study of language and literature	the phonological or orthographic sound or appearance of a word that can be used to describe or identify something