class Sphenopsida vs class Equisetatae

class Sphenopsida and class Equisetatae both are nouns.

Word	Noun	Adjective	Verb	Adverb
class Sphenopsida	Yes	No	No	No
class Equisetatae	Yes	No	No	No

As nouns, class Sphenopsida and class Equisetatae are synonyms defined as:

Other synonyms of class Sphenopsida include Equisetatae, Sphenopsida.

class Sphenopsida (noun)	class Equisetatae (noun)
horsetails and related forms	horsetails and related forms