noun vs noun

noun and noun both are nouns.

Word	Noun	Adjective	Verb	Adverb
noun	Yes	No	No	No
noun	Yes	No	No	No

noun (noun)	noun (noun)
a content word that can be used to refer to a person, place, thing, quality, or action	a content word that can be used to refer to a person, place, thing, quality, or action
the word class that can serve as the subject or object of a verb, the object of a preposition, or in apposition	the word class that can serve as the subject or object of a verb, the object of a preposition, or in apposition