Cyanophyceae vs class Cyanophyceae

Cyanophyceae and class Cyanophyceae both are nouns.

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

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

Cyanophyceae and class Cyanophyceae: photosynthetic bacteria found in fresh and salt water, having chlorophyll a and phycobilins; once thought to be algae: blue-green algae

Other synonyms of Cyanophyceae include class Cyanobacteria.

Cyanophyceae (noun)	class Cyanophyceae (noun)
photosynthetic bacteria found in fresh and salt water, having chlorophyll a and phycobilins; once thought to be algae: blue-green algae	photosynthetic bacteria found in fresh and salt water, having chlorophyll a and phycobilins; once thought to be algae: blue-green algae