Ulmaceae vs family Ulmaceae

Ulmaceae and family Ulmaceae both are nouns.

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

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

Ulmaceae and family Ulmaceae: a dicot family of the order Urticales including: genera Ulmus, Celtis, Planera, Trema

Other synonyms of Ulmaceae include elm family.

Ulmaceae (noun)	family Ulmaceae (noun)
a dicot family of the order Urticales including: genera Ulmus, Celtis, Planera, Trema	a dicot family of the order Urticales including: genera Ulmus, Celtis, Planera, Trema