Orchidales vs plant order

Orchidales and plant order both are nouns.

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

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

Orchidales: order of plants with irregular flowers having minute seeds: Orchidaceae; Burmanniaceae
plant order: the order of plants

Orchidales (noun)	plant order (noun)
order of plants with irregular flowers having minute seeds: Orchidaceae; Burmanniaceae	the order of plants