class Dicotyledones vs order Aristolochiales

class Dicotyledones and order Aristolochiales both are nouns.

Word	Noun	Adjective	Verb	Adverb
class Dicotyledones	Yes	No	No	No
order Aristolochiales	Yes	No	No	No

class Dicotyledones (noun)	order Aristolochiales (noun)
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	order of plants distinguished by tubular petaloid perianth and inferior ovary