Phytomastigina vs subclass Phytomastigina

Phytomastigina and subclass Phytomastigina both are nouns.

Word	Noun	Adjective	Verb	Adverb
Phytomastigina	Yes	No	No	No
subclass Phytomastigina	Yes	No	No	No

As nouns, Phytomastigina and subclass Phytomastigina are synonyms defined as:

Phytomastigina and subclass Phytomastigina: plantlike flagellates containing chlorophyll; often considered unicellular algae

Phytomastigina (noun)	subclass Phytomastigina (noun)
plantlike flagellates containing chlorophyll; often considered unicellular algae	plantlike flagellates containing chlorophyll; often considered unicellular algae