Polemoniales vs plant order

Polemoniales and plant order both are nouns.

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

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

Polemoniales: Polemoniaceae, Solanaceae, Boraginaceae, Labiatae, Lentibulariaceae, Pedaliaceae; in some classifications includes the order Scrophulariales
plant order: the order of plants

Polemoniales (noun)	plant order (noun)
Polemoniaceae, Solanaceae, Boraginaceae, Labiatae, Lentibulariaceae, Pedaliaceae; in some classifications includes the order Scrophulariales	the order of plants