eastern lowland gorilla vs Gorilla gorilla grauri

eastern lowland gorilla and Gorilla gorilla grauri both are nouns.

Word	Noun	Adjective	Verb	Adverb
eastern lowland gorilla	Yes	No	No	No
Gorilla gorilla grauri	Yes	No	No	No

As nouns, eastern lowland gorilla and Gorilla gorilla grauri are synonyms defined as:

eastern lowland gorilla and Gorilla gorilla grauri: the largest subspecies of gorilla (Gorilla gorilla grauri)

eastern lowland gorilla (noun)	Gorilla gorilla grauri (noun)
the largest subspecies of gorilla (Gorilla gorilla grauri)	the largest subspecies of gorilla (Gorilla gorilla grauri)