Isoetales vs order Isoetales

Isoetales and order Isoetales both are nouns.

Word	Noun	Adjective	Verb	Adverb
Isoetales	Yes	No	No	No
order Isoetales	Yes	No	No	No

As nouns, Isoetales and order Isoetales are synonyms defined as:

Isoetales and order Isoetales: aquatic or marsh-growing fern allies; known to have existed since the Cenozoic; sometimes included in Lycopodiales

Isoetales (noun)	order Isoetales (noun)
aquatic or marsh-growing fern allies; known to have existed since the Cenozoic; sometimes included in Lycopodiales	aquatic or marsh-growing fern allies; known to have existed since the Cenozoic; sometimes included in Lycopodiales