class Actinozoa vs Cnidaria

class Actinozoa and Cnidaria both are nouns.

Word	Noun	Adjective	Verb	Adverb
class Actinozoa	Yes	No	No	No
Cnidaria	Yes	No	No	No

class Actinozoa (noun)	Cnidaria (noun)
a large class of sedentary marine coelenterates that includes sea anemones and corals; the medusoid phase is entirely suppressed	hydras, polyps, jellyfishes, sea anemones, corals