Plumbaginales vs plant order

Plumbaginales and plant order both are nouns.

Word	Noun	Adjective	Verb	Adverb
Plumbaginales	Yes	No	No	No
plant order	Yes	No	No	No

As nouns, plant order is a hypernym of Plumbaginales; that is, plant order is a word with a broader meaning than Plumbaginales:

Plumbaginales: coextensive with the family Plumbaginaceae; usually included in order Primulales
plant order: the order of plants

Plumbaginales (noun)	plant order (noun)
coextensive with the family Plumbaginaceae; usually included in order Primulales	the order of plants