croo monkey vs crab-eating macaque

croo monkey and crab-eating macaque both are nouns.

Word	Noun	Adjective	Verb	Adverb
croo monkey	Yes	No	No	No
crab-eating macaque	Yes	No	No	No

As nouns, croo monkey and crab-eating macaque are synonyms defined as:

croo monkey and crab-eating macaque: monkey of southeast Asia, Borneo and the Philippines

Other synonyms of croo monkey include Macaca irus.

croo monkey (noun)	crab-eating macaque (noun)
monkey of southeast Asia, Borneo and the Philippines	monkey of southeast Asia, Borneo and the Philippines