genus Prunus vs rose family

genus Prunus and rose family both are nouns.

Word	Noun	Adjective	Verb	Adverb
genus Prunus	Yes	No	No	No
rose family	Yes	No	No	No

genus Prunus (noun)	rose family (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