Myocastor coypus vs rodent

Myocastor coypus and rodent both are nouns.

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

As nouns, rodent is a hypernym of Myocastor coypus; that is, rodent is a word with a broader meaning than Myocastor coypus:

Myocastor coypus: aquatic South American rodent resembling a small beaver; bred for its fur
rodent: relatively small placental mammals having a single pair of constantly growing incisor teeth specialized for gnawing

Other hypernyms of Myocastor coypus include gnawer.

Myocastor coypus (noun)	rodent (noun)
aquatic South American rodent resembling a small beaver; bred for its fur	relatively small placental mammals having a single pair of constantly growing incisor teeth specialized for gnawing