big vs deep

big is not a noun while deep is a noun.

Word	Noun	Adjective	Verb	Adverb
big	No	Yes	No	Yes
deep	Yes	Yes	No	Yes

big (noun)	deep (noun)
	a long steep-sided depression in the ocean floor
	literary term for an ocean
	the central and most intense or profound part

big (adjective)	deep (adjective)
above average in size or number or quantity or magnitude or extent	having great spatial extension or penetration downward or inward from an outer surface or backward or laterally or outward from a center; sometimes used in combination
conspicuous in position or importance	relatively deep or strong; affecting one deeply
given or giving freely	exhibiting great cunning usually with secrecy
generous and understanding and tolerant	strong; intense
marked by intense physical force	very distant in time or space
significant	difficult to penetrate; incomprehensible to one of ordinary understanding or knowledge
prodigious	of an obscure nature
serious or severe	intense or extreme
loud and firm	large in quantity or size
(of animals) fully developed	with head or back bent low
in an advanced stage of pregnancy	having or denoting a low vocal or instrumental range
feeling self-importance	marked by depth of thinking
exhibiting self-importance	relatively thick from top to bottom
	extending relatively far inward
	(of darkness) densely dark