croo monkey vs Macaca irus

croo monkey and Macaca irus both are nouns.

Word	Noun	Adjective	Verb	Adverb
croo monkey	Yes	No	No	No
Macaca irus	Yes	No	No	No

As nouns, croo monkey and Macaca irus are synonyms defined as:

croo monkey and Macaca irus: monkey of southeast Asia, Borneo and the Philippines

Other synonyms of croo monkey include crab-eating macaque.

croo monkey (noun)	Macaca irus (noun)
monkey of southeast Asia, Borneo and the Philippines	monkey of southeast Asia, Borneo and the Philippines