Ibis ibis vs wood ibis

Ibis ibis and wood ibis both are nouns.

Word	Noun	Adjective	Verb	Adverb
Ibis ibis	Yes	No	No	No
wood ibis	Yes	No	No	No

As nouns, Ibis ibis and wood ibis are synonyms defined as:

Ibis ibis and wood ibis: any of several Old World birds of the genus Ibis

Other synonyms of Ibis ibis include wood stork.

Ibis ibis (noun)	wood ibis (noun)
any of several Old World birds of the genus Ibis	an American stork that resembles the true ibises in having a downward-curved bill; inhabits wooded swamps of New World tropics
	any of several Old World birds of the genus Ibis