order Batrachia vs class Amphibia

order Batrachia and class Amphibia both are nouns.

Word	Noun	Adjective	Verb	Adverb
order Batrachia	Yes	No	No	No
class Amphibia	Yes	No	No	No

order Batrachia (noun)	class Amphibia (noun)
frogs, toads, tree toads	the class of vertebrates that live on land but breed in water, frogs, toads, newts, salamanders, caecilians