class Rhodophyceae vs Rhodophyceae

class Rhodophyceae and Rhodophyceae both are nouns.

Word	Noun	Adjective	Verb	Adverb
class Rhodophyceae	Yes	No	No	No
Rhodophyceae	Yes	No	No	No

As nouns, class Rhodophyceae and Rhodophyceae are synonyms defined as:

class Rhodophyceae and Rhodophyceae: coextensive with the Rhodophyta: red algae

class Rhodophyceae (noun)	Rhodophyceae (noun)
coextensive with the Rhodophyta: red algae	coextensive with the Rhodophyta: red algae