Bacillariophyceae vs class Diatomophyceae

Bacillariophyceae and class Diatomophyceae both are nouns.

Word	Noun	Adjective	Verb	Adverb
Bacillariophyceae	Yes	No	No	No
class Diatomophyceae	Yes	No	No	No

As nouns, Bacillariophyceae and class Diatomophyceae are synonyms defined as:

Bacillariophyceae and class Diatomophyceae: marine and freshwater eukaryotic algae: diatoms

Other synonyms of Bacillariophyceae include class Bacillariophyceae, Diatomophyceae.

Bacillariophyceae (noun)	class Diatomophyceae (noun)
marine and freshwater eukaryotic algae: diatoms	marine and freshwater eukaryotic algae: diatoms