order Isoetales vs Isoetales

order Isoetales and Isoetales both are nouns.

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

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

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

order Isoetales (noun)	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