liverwort vs hornwort

liverwort and hornwort both are nouns.

Word	Noun	Adjective	Verb	Adverb
liverwort	Yes	No	No	No
hornwort	Yes	No	No	No

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

liverwort: any of numerous small green nonvascular plants of the class Hepaticopsida growing in wet places and resembling green seaweeds or leafy mosses
hornwort: liverworts with slender hornlike capsules

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

liverwort (noun)	hornwort (noun)
any of numerous small green nonvascular plants of the class Hepaticopsida growing in wet places and resembling green seaweeds or leafy mosses	liverworts with slender hornlike capsules
	any aquatic plant of the genus Ceratophyllum; forms submerged masses in ponds and slow-flowing streams