class Liliopsida vs liliopsid

class Liliopsida and liliopsid both are nouns.

Word	Noun	Adjective	Verb	Adverb
class Liliopsida	Yes	No	No	No
liliopsid	Yes	No	No	No

class Liliopsida (noun)	liliopsid (noun)
comprising seed plants that produce an embryo with a single cotyledon and parallel-veined leaves: includes grasses and lilies and palms and orchids; divided into four subclasses or superorders: Alismatidae, Arecidae, Commelinidae, and Liliidae	a monocotyledonous flowering plant; the stem grows by deposits on its inside