Infusoria vs subclass Infusoria

Infusoria and subclass Infusoria both are nouns.

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

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

Infusoria and subclass Infusoria: in some recent classifications, coextensive with the Ciliata: minute organisms found in decomposing infusions of organic matter

Infusoria (noun)	subclass Infusoria (noun)
in some recent classifications, coextensive with the Ciliata: minute organisms found in decomposing infusions of organic matter	in some recent classifications, coextensive with the Ciliata: minute organisms found in decomposing infusions of organic matter