hepatic vs hepatica

hepatic and hepatica both are nouns.

Word	Noun	Adjective	Verb	Adverb
hepatic	Yes	Yes	No	No
hepatica	Yes	No	No	No

As nouns, hepatica is a hyponym of hepatic; that is, hepatica is a word with a more specific, narrower meaning than hepatic:

hepatic: any of numerous small green nonvascular plants of the class Hepaticopsida growing in wet places and resembling green seaweeds or leafy mosses
hepatica: a common liverwort

Other hyponyms of hepatic include hornwort, leafy liverwort, scale moss, Marchantia polymorpha.

hepatic (noun)	hepatica (noun)
any of numerous small green nonvascular plants of the class Hepaticopsida growing in wet places and resembling green seaweeds or leafy mosses	any of several plants of the genus Hepatica having three-lobed leaves and white or pinkish flowers in early spring; of moist and mossy subalpine woodland areas of north temperate regions
	a common liverwort

hepatic (adjective)	hepatica (adjective)
pertaining to or affecting the liver