anthozoan vs class Actinozoa

anthozoan and class Actinozoa both are nouns.

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

anthozoan (noun)	class Actinozoa (noun)
sessile marine coelenterates including solitary and colonial polyps; the medusoid phase is entirely suppressed	a large class of sedentary marine coelenterates that includes sea anemones and corals; the medusoid phase is entirely suppressed