Indigofera tinctoria vs shrub

Indigofera tinctoria and shrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
Indigofera tinctoria	Yes	No	No	No
shrub	Yes	No	No	No

As nouns, shrub is a hypernym of Indigofera tinctoria; that is, shrub is a word with a broader meaning than Indigofera tinctoria:

Indigofera tinctoria: deciduous subshrub of southeastern Asia having pinnate leaves and clusters of red or purple flowers; a source of indigo dye
shrub: a low woody perennial plant usually having several major stems

Other hypernyms of Indigofera tinctoria include bush.

Indigofera tinctoria (noun)	shrub (noun)
deciduous subshrub of southeastern Asia having pinnate leaves and clusters of red or purple flowers; a source of indigo dye	a low woody perennial plant usually having several major stems