primrose family vs family Primulaceae

primrose family and family Primulaceae both are nouns.

Word	Noun	Adjective	Verb	Adverb
primrose family	Yes	No	No	No
family Primulaceae	Yes	No	No	No

As nouns, primrose family and family Primulaceae are synonyms defined as:

primrose family and family Primulaceae: a dicotyledonous family of the order Primulales with a regular flower; widely distributed in the Northern Hemisphere

Other synonyms of primrose family include Primulaceae.

primrose family (noun)	family Primulaceae (noun)
a dicotyledonous family of the order Primulales with a regular flower; widely distributed in the Northern Hemisphere	a dicotyledonous family of the order Primulales with a regular flower; widely distributed in the Northern Hemisphere