Gentianales vs plant order

Gentianales and plant order both are nouns.

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

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

Gentianales: an order of dicotyledonous plants having gamopetalous flowers, Gentianaceae, Apocynaceae, Asclepiadaceae, Loganiaceae, Oleaceae, Salvadoraceae
plant order: the order of plants

Gentianales (noun)	plant order (noun)
an order of dicotyledonous plants having gamopetalous flowers, Gentianaceae, Apocynaceae, Asclepiadaceae, Loganiaceae, Oleaceae, Salvadoraceae	the order of plants