nandu vs rhea

nandu and rhea both are nouns.

Word	Noun	Adjective	Verb	Adverb
nandu	Yes	No	No	No
rhea	Yes	No	No	No

As nouns, nandu and rhea are synonyms defined as:

nandu and rhea: smaller of two tall fast-running flightless birds similar to ostriches but three-toed; found from Peru to Strait of Magellan

Other synonyms of nandu include Pterocnemia pennata.

nandu (noun)	rhea (noun)
smaller of two tall fast-running flightless birds similar to ostriches but three-toed; found from Peru to Strait of Magellan	larger of two tall fast-running flightless birds similar to ostriches but three-toed; found from Brazil to Patagonia
	smaller of two tall fast-running flightless birds similar to ostriches but three-toed; found from Peru to Strait of Magellan