Macaca irus vs crab-eating macaque

Macaca irus and crab-eating macaque both are nouns.

Word	Noun	Adjective	Verb	Adverb
Macaca irus	Yes	No	No	No
crab-eating macaque	Yes	No	No	No

As nouns, Macaca irus and crab-eating macaque are synonyms defined as:

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

Other synonyms of Macaca irus include croo monkey.

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