coypu vs Myocastor coypus

coypu and Myocastor coypus both are nouns.

Word	Noun	Adjective	Verb	Adverb
coypu	Yes	No	No	No
Myocastor coypus	Yes	No	No	No

As nouns, coypu and Myocastor coypus are synonyms defined as:

coypu and Myocastor coypus: aquatic South American rodent resembling a small beaver; bred for its fur

Other synonyms of coypu include nutria.

coypu (noun)	Myocastor coypus (noun)
aquatic South American rodent resembling a small beaver; bred for its fur	aquatic South American rodent resembling a small beaver; bred for its fur