subclass Caryophyllidae vs Dicotyledones

subclass Caryophyllidae and Dicotyledones both are nouns.

Word	Noun	Adjective	Verb	Adverb
subclass Caryophyllidae	Yes	No	No	No
Dicotyledones	Yes	No	No	No

subclass Caryophyllidae (noun)	Dicotyledones (noun)
a group of families of mostly flowers having basal or central placentation and trinucleate pollen (binucleate pollen is commoner in flowering plants); contains 14 families including: Caryophyllaceae (carnations and pinks), Aizoaceae, Amaranthaceae, Batidaceae, Chenopodiaceae, Cactaceae (order Opuntiales), Nyctaginaceae, Phytolaccaceae	comprising seed plants that produce an embryo with paired cotyledons and net-veined leaves; divided into six (not always well distinguished) subclasses (or superorders): Magnoliidae and Hamamelidae (considered primitive), Caryophyllidae (an early and distinctive offshoot), and three more or less advanced groups: Dilleniidae, Rosidae, Asteridae