order Psilophytales vs Psilophytales

order Psilophytales and Psilophytales both are nouns.

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

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

order Psilophytales and Psilophytales: Paleozoic simple dichotomously branched plants of Europe and eastern Canada including the oldest known vascular land plants

order Psilophytales (noun)	Psilophytales (noun)
Paleozoic simple dichotomously branched plants of Europe and eastern Canada including the oldest known vascular land plants	Paleozoic simple dichotomously branched plants of Europe and eastern Canada including the oldest known vascular land plants