caracara vs carancha

caracara and carancha both are nouns.

Word	Noun	Adjective	Verb	Adverb
caracara	Yes	No	No	No
carancha	Yes	No	No	No

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

caracara: any of various long-legged carrion-eating hawks of South America and Central America
carancha: South American caracara

Other hyponyms of caracara include Audubon's caracara, Polyborus cheriway audubonii, Polyborus plancus.

caracara (noun)	carancha (noun)
any of various long-legged carrion-eating hawks of South America and Central America	South American caracara