paca vs gnawer

paca and gnawer both are nouns.

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

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

paca: large burrowing rodent of South America and Central America; highly esteemed as food
gnawer: relatively small placental mammals having a single pair of constantly growing incisor teeth specialized for gnawing

Other hypernyms of paca include rodent.

paca (noun)	gnawer (noun)
large burrowing rodent of South America and Central America; highly esteemed as food	relatively small placental mammals having a single pair of constantly growing incisor teeth specialized for gnawing