class Hepaticae vs liverwort

class Hepaticae and liverwort both are nouns.

Word	Noun	Adjective	Verb	Adverb
class Hepaticae	Yes	No	No	No
liverwort	Yes	No	No	No

class Hepaticae (noun)	liverwort (noun)
liverworts: comprises orders Anthocerotales, Jungermanniales, Marchantiales, Sphaerocarpales	any of numerous small green nonvascular plants of the class Hepaticopsida growing in wet places and resembling green seaweeds or leafy mosses