Cordaitales vs plant order

Cordaitales and plant order both are nouns.

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

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

Cordaitales: extinct plants having tall arborescent trunks comparable to or more advanced than cycads; known from the Pennsylvanian period; probably extinct since the Mesozoic era
plant order: the order of plants

Cordaitales (noun)	plant order (noun)
extinct plants having tall arborescent trunks comparable to or more advanced than cycads; known from the Pennsylvanian period; probably extinct since the Mesozoic era	the order of plants