actinozoan vs class Actinozoa

actinozoan and class Actinozoa both are nouns.

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

actinozoan (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