class Actinozoa vs phylum Cnidaria

class Actinozoa and phylum Cnidaria both are nouns.

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

class Actinozoa (noun)	phylum 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