chinchillon vs gnawer

chinchillon and gnawer both are nouns.

Word	Noun	Adjective	Verb	Adverb
chinchillon	Yes	No	No	No
gnawer	Yes	No	No	No

As nouns, gnawer is a hypernym of chinchillon; that is, gnawer is a word with a broader meaning than chinchillon:

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

Other hypernyms of chinchillon include rodent.

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