combretum vs ligneous plant

combretum and ligneous plant both are nouns.

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

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

combretum: any of numerous shrubs or small trees of the genus Combretum having spikes of small flowers
ligneous plant: a plant having hard lignified tissues or woody parts especially stems

Other hypernyms of combretum include woody plant.

combretum (noun)	ligneous plant (noun)
any of numerous shrubs or small trees of the genus Combretum having spikes of small flowers	a plant having hard lignified tissues or woody parts especially stems