Indian madder vs madderwort

Indian madder and madderwort both are nouns.

Word	Noun	Adjective	Verb	Adverb
Indian madder	Yes	No	No	No
madderwort	Yes	No	No	No

As nouns, madderwort is a hypernym of Indian madder; that is, madderwort is a word with a broader meaning than Indian madder:

Indian madder: perennial East Indian creeping or climbing herb used for dye in the orient
madderwort: any of numerous trees or shrubs or vines of the family Rubiaceae

Other hypernyms of Indian madder include rubiaceous plant.

Indian madder (noun)	madderwort (noun)
perennial East Indian creeping or climbing herb used for dye in the orient	any of numerous trees or shrubs or vines of the family Rubiaceae