Naiadaceae vs family Naiadaceae

Naiadaceae and family Naiadaceae both are nouns.

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

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

Naiadaceae and family Naiadaceae: monotypic family of aquatic plants having narrow leaves and small flowers

Other synonyms of Naiadaceae include family Najadaceae, naiad family, Najadaceae.

Naiadaceae (noun)	family Naiadaceae (noun)
monotypic family of aquatic plants having narrow leaves and small flowers	monotypic family of aquatic plants having narrow leaves and small flowers