quetzal bird vs quetzal

quetzal bird and quetzal both are nouns.

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

As nouns, quetzal bird and quetzal are synonyms defined as:

quetzal bird and quetzal: large trogon of Central America and South America having golden-green and scarlet plumage

quetzal bird (noun)	quetzal (noun)
large trogon of Central America and South America having golden-green and scarlet plumage	large trogon of Central America and South America having golden-green and scarlet plumage
	the basic unit of money in Guatemala; equal to 100 centavos