family Anatidae vs Anatidae

family Anatidae and Anatidae both are nouns.

Word	Noun	Adjective	Verb	Adverb
family Anatidae	Yes	No	No	No
Anatidae	Yes	No	No	No

As nouns, family Anatidae and Anatidae are synonyms defined as:

family Anatidae and Anatidae: swimming birds having heavy short-legged bodies and bills with a horny tip: swans, geese, ducks

family Anatidae (noun)	Anatidae (noun)
swimming birds having heavy short-legged bodies and bills with a horny tip: swans, geese, ducks	swimming birds having heavy short-legged bodies and bills with a horny tip: swans, geese, ducks