Selaginellales vs plant order

Selaginellales and plant order both are nouns.

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

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

Selaginellales (noun)	plant order (noun)
in some classifications included in Lycopodiales	the order of plants