order Orchidales vs plant order

order Orchidales and plant order both are nouns.

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

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

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

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