Psilophytales vs order Psilophytales

Psilophytales and order Psilophytales both are nouns.

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

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

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

Psilophytales (noun)	order 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