Marattiales vs plant order

Marattiales and plant order both are nouns.

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

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

Marattiales (noun)	plant order (noun)
lower ferns coextensive with the family Marattiaceae	the order of plants