liverwort vs nonvascular plant

liverwort and nonvascular plant both are nouns.

Word	Noun	Adjective	Verb	Adverb
liverwort	Yes	No	No	No
nonvascular plant	Yes	No	No	No

As nouns, nonvascular plant is a hypernym of liverwort; that is, nonvascular plant is a word with a broader 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
nonvascular plant: any of numerous plants of the division Bryophyta

Other hypernyms of liverwort include bryophyte.

liverwort (noun)	nonvascular plant (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 numerous plants of the division Bryophyta