Therapsida vs order Therapsida

Therapsida and order Therapsida both are nouns.

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

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

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

Therapsida (noun)	order 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