capuchin vs Cebus capucinus

capuchin and Cebus capucinus both are nouns.

Word	Noun	Adjective	Verb	Adverb
capuchin	Yes	No	No	No
Cebus capucinus	Yes	No	No	No

As nouns, capuchin and Cebus capucinus are synonyms defined as:

capuchin and Cebus capucinus: monkey of Central America and South America having thick hair on the head that resembles a monk's cowl

Other synonyms of capuchin include ringtail.

capuchin (noun)	Cebus capucinus (noun)
monkey of Central America and South America having thick hair on the head that resembles a monk's cowl	monkey of Central America and South America having thick hair on the head that resembles a monk's cowl
a hooded cloak for women