squirrel monkey vs Saimiri sciureus

squirrel monkey and Saimiri sciureus both are nouns.

Word	Noun	Adjective	Verb	Adverb
squirrel monkey	Yes	No	No	No
Saimiri sciureus	Yes	No	No	No

As nouns, squirrel monkey and Saimiri sciureus are synonyms defined as:

squirrel monkey and Saimiri sciureus: small long-tailed monkey of Central American and South America with greenish fur and black muzzle

squirrel monkey (noun)	Saimiri sciureus (noun)
small long-tailed monkey of Central American and South America with greenish fur and black muzzle	small long-tailed monkey of Central American and South America with greenish fur and black muzzle