Prunus vs family Rosaceae

Prunus and family Rosaceae both are nouns.

Word	Noun	Adjective	Verb	Adverb
Prunus	Yes	No	No	No
family Rosaceae	Yes	No	No	No

Prunus (noun)	family Rosaceae (noun)
a genus of shrubs and trees of the family Rosaceae that is widely distributed in temperate regions	a large family of dicotyledonous plants of order Rosales; have alternate leaves and five-petaled flowers with numerous stamens