gnawer vs capybara

gnawer and capybara both are nouns.

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

As nouns, capybara is a hyponym of gnawer; that is, capybara is a word with a more specific, narrower meaning than gnawer:

gnawer: relatively small placental mammals having a single pair of constantly growing incisor teeth specialized for gnawing
capybara: pig-sized tailless South American amphibious rodent with partly webbed feet; largest living rodent

gnawer (noun)	capybara (noun)
relatively small placental mammals having a single pair of constantly growing incisor teeth specialized for gnawing	pig-sized tailless South American amphibious rodent with partly webbed feet; largest living rodent