Chrysophyceae vs class Chrysophyceae

Chrysophyceae and class Chrysophyceae both are nouns.

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

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

Chrysophyceae and class Chrysophyceae: all the yellow-green algae having flagella of unequal length

Other synonyms of Chrysophyceae include class Heterokontae, Heterokontae.

Chrysophyceae (noun)	class Chrysophyceae (noun)
all the yellow-green algae having flagella of unequal length	all the yellow-green algae having flagella of unequal length