deep vs big

deep is a noun but big is not a noun.

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

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

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