melilotus vs woody plant

melilotus and woody plant both are nouns.

Word	Noun	Adjective	Verb	Adverb
melilotus	Yes	No	No	No
woody plant	Yes	No	No	No

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

melilotus: erect annual or biennial plant grown extensively especially for hay and soil improvement
woody plant: a plant having hard lignified tissues or woody parts especially stems

Other hypernyms of melilotus include ligneous plant.

melilotus (noun)	woody plant (noun)
erect annual or biennial plant grown extensively especially for hay and soil improvement	a plant having hard lignified tissues or woody parts especially stems