Nares Deep vs Puerto Rico Trench

Nares Deep and Puerto Rico Trench both are nouns.

Word	Noun	Adjective	Verb	Adverb
Nares Deep	Yes	No	No	No
Puerto Rico Trench	Yes	No	No	No

As nouns, Nares Deep and Puerto Rico Trench are synonyms defined as:

Nares Deep and Puerto Rico Trench: a depression in the floor of the Atlantic Ocean to the north of Haiti and Puerto Rico

Nares Deep (noun)	Puerto Rico Trench (noun)
a depression in the floor of the Atlantic Ocean to the north of Haiti and Puerto Rico	a depression in the floor of the Atlantic Ocean to the north of Haiti and Puerto Rico