class Cyanobacteria vs class Cyanophyceae

class Cyanobacteria and class Cyanophyceae both are nouns.

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

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

class Cyanobacteria 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 class Cyanobacteria include Cyanophyceae.

class Cyanobacteria (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