eastern vs western

eastern is not a noun while western is a noun.

Word	Noun	Adjective	Verb	Adverb
eastern	No	Yes	No	No
western	Yes	Yes	No	No

eastern (noun)	western (noun)
	a sandwich made from a western omelet

eastern (adjective)	western (adjective)
relating to or characteristic of regions of eastern parts of the world	relating to or characteristic of the western parts of the world or the West as opposed to the eastern or oriental parts
of or characteristic of eastern regions of the United States	of or characteristic of regions of the United States west of the Mississippi River
lying toward or situated in the east	lying toward or situated in the west
from the east; used especially of winds	of wind; from the west
lying in or toward the east