Diatomophyceae vs class Bacillariophyceae

Diatomophyceae and class Bacillariophyceae both are nouns.

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

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

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

Other synonyms of Diatomophyceae include Bacillariophyceae, class Diatomophyceae.

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