order Therapsida vs Therapsida

order Therapsida and Therapsida both are nouns.

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

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

order Therapsida and Therapsida: extinct mammal-like reptiles found inhabiting all continents from the mid Permian to late Triassic

order Therapsida (noun)	Therapsida (noun)
extinct mammal-like reptiles found inhabiting all continents from the mid Permian to late Triassic	extinct mammal-like reptiles found inhabiting all continents from the mid Permian to late Triassic