Chelonia vs order Chelonia

Chelonia and order Chelonia both are nouns.

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

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

Other synonyms of Chelonia include order Testudinata, order Testudines, Testudinata, Testudines.

Chelonia (noun)	order Chelonia (noun)
tortoises and turtles	tortoises and turtles
green turtles