leathery turtle vs Dermochelys coriacea

leathery turtle and Dermochelys coriacea both are nouns.

Word	Noun	Adjective	Verb	Adverb
leathery turtle	Yes	No	No	No
Dermochelys coriacea	Yes	No	No	No

As nouns, leathery turtle and Dermochelys coriacea are synonyms defined as:

leathery turtle and Dermochelys coriacea: wide-ranging marine turtle with flexible leathery carapace; largest living turtle

Other synonyms of leathery turtle include leatherback, leatherback turtle.

leathery turtle (noun)	Dermochelys coriacea (noun)
wide-ranging marine turtle with flexible leathery carapace; largest living turtle	wide-ranging marine turtle with flexible leathery carapace; largest living turtle