nettle family vs family Urticaceae

nettle family and family Urticaceae both are nouns.

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

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

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

Other synonyms of nettle family include Urticaceae.

nettle family (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