Fagales vs subclass Hamamelidae

Fagales and subclass Hamamelidae both are nouns.

Word	Noun	Adjective	Verb	Adverb
Fagales	Yes	No	No	No
subclass Hamamelidae	Yes	No	No	No

Fagales (noun)	subclass Hamamelidae (noun)
an order of dicotyledonous trees of the subclass Hamamelidae	a group of chiefly woody plants considered among the most primitive of angiosperms; perianth poorly developed or lacking; flowers often unisexual and often in catkins and often wind pollinated; contains 23 families including the Betulaceae and Fagaceae (includes the Amentiferae); sometimes classified as a superorder