family Threskiornithidae vs family Ibidiidae

family Threskiornithidae and family Ibidiidae both are nouns.

Word	Noun	Adjective	Verb	Adverb
family Threskiornithidae	Yes	No	No	No
family Ibidiidae	Yes	No	No	No

As nouns, family Threskiornithidae and family Ibidiidae are synonyms defined as:

family Threskiornithidae and family Ibidiidae: a family comprising ibises and spoonbills (Threskiornithidae, Ibidiidae)

Other synonyms of family Threskiornithidae include Threskiornithidae.

family Threskiornithidae (noun)	family Ibidiidae (noun)
a family comprising ibises and spoonbills (Threskiornithidae, Ibidiidae)	a family comprising ibises and spoonbills (Threskiornithidae, Ibidiidae)