Urodella vs order Caudata

Urodella and order Caudata both are nouns.

Word	Noun	Adjective	Verb	Adverb
Urodella	Yes	No	No	No
order Caudata	Yes	No	No	No

As nouns, Urodella and order Caudata are synonyms defined as:

Other synonyms of Urodella include Caudata, order Urodella.

Urodella (noun)	order Caudata (noun)
salamanders, newts, congo snakes	salamanders, newts, congo snakes