deep vs Bougainville Trench

deep and Bougainville Trench both are nouns.

Word	Noun	Adjective	Verb	Adverb
deep	Yes	Yes	No	Yes
Bougainville Trench	Yes	No	No	No

deep (noun)	Bougainville Trench (noun)
a long steep-sided depression in the ocean floor	a depression in the floor of the Pacific Ocean between New Guinea and the Solomon Islands
literary term for an ocean
the central and most intense or profound part

deep (adjective)	Bougainville Trench (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
relatively deep or strong; affecting one deeply
exhibiting great cunning usually with secrecy
strong; intense
very distant in time or space
difficult to penetrate; incomprehensible to one of ordinary understanding or knowledge
of an obscure nature
intense or extreme
large in quantity or size
with head or back bent low
having or denoting a low vocal or instrumental range
marked by depth of thinking
relatively thick from top to bottom
extending relatively far inward
(of darkness) densely dark