viscacha vs rodent

viscacha and rodent both are nouns.

Word	Noun	Adjective	Verb	Adverb
viscacha	Yes	No	No	No
rodent	Yes	No	No	No

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

viscacha: gregarious burrowing rodent larger than the chinchillas
rodent: relatively small placental mammals having a single pair of constantly growing incisor teeth specialized for gnawing

Other hypernyms of viscacha include gnawer.

viscacha (noun)	rodent (noun)
gregarious burrowing rodent larger than the chinchillas	relatively small placental mammals having a single pair of constantly growing incisor teeth specialized for gnawing