class Actinozoa vs order Madreporaria

class Actinozoa and order Madreporaria both are nouns.

Word	Noun	Adjective	Verb	Adverb
class Actinozoa	Yes	No	No	No
order Madreporaria	Yes	No	No	No

class Actinozoa (noun)	order Madreporaria (noun)
a large class of sedentary marine coelenterates that includes sea anemones and corals; the medusoid phase is entirely suppressed	stony corals