Urticaceae vs family Urticaceae

Urticaceae and family Urticaceae both are nouns.

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

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

Urticaceae and family Urticaceae: a family of plants of order Urticales including many nettles with stinging hairs

Other synonyms of Urticaceae include nettle family.

Urticaceae (noun)	family Urticaceae (noun)
a family of plants of order Urticales including many nettles with stinging hairs	a family of plants of order Urticales including many nettles with stinging hairs