bramble vs ligneous plant

bramble and ligneous plant both are nouns.

Word	Noun	Adjective	Verb	Adverb
bramble	Yes	No	No	No
ligneous plant	Yes	No	No	No

As nouns, ligneous plant is a hypernym of bramble; that is, ligneous plant is a word with a broader meaning than bramble:

bramble: any of various rough thorny shrubs or vines
ligneous plant: a plant having hard lignified tissues or woody parts especially stems

Other hypernyms of bramble include woody plant.

bramble (noun)	ligneous plant (noun)
any of various rough thorny shrubs or vines	a plant having hard lignified tissues or woody parts especially stems