hamamelid dicot genus vs Hamamelidae

hamamelid dicot genus and Hamamelidae both are nouns.

Word	Noun	Adjective	Verb	Adverb
hamamelid dicot genus	Yes	No	No	No
Hamamelidae	Yes	No	No	No

hamamelid dicot genus (noun)	Hamamelidae (noun)
genus of mostly woody relatively primitive dicotyledonous flowering plants with flowers often unisexual and often borne in catkins	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