order Salicales vs plant order

order Salicales and plant order both are nouns.

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

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

order Salicales (noun)	plant order (noun)
coextensive with the family Salicaceae	the order of plants