quetzal bird vs trogon

quetzal bird and trogon both are nouns.

Word	Noun	Adjective	Verb	Adverb
quetzal bird	Yes	No	No	No
trogon	Yes	No	No	No

As nouns, trogon is a hypernym of quetzal bird; that is, trogon is a word with a broader meaning than quetzal bird:

quetzal bird: large trogon of Central America and South America having golden-green and scarlet plumage
trogon: forest bird of warm regions of the New World having brilliant lustrous plumage and long tails

quetzal bird (noun)	trogon (noun)
large trogon of Central America and South America having golden-green and scarlet plumage	forest bird of warm regions of the New World having brilliant lustrous plumage and long tails