Indigofera tinctoria vs indigo plant

Indigofera tinctoria and indigo plant both are nouns.

Word	Noun	Adjective	Verb	Adverb
Indigofera tinctoria	Yes	No	No	No
indigo plant	Yes	No	No	No

As nouns, Indigofera tinctoria and indigo plant are synonyms defined as:

Indigofera tinctoria and indigo plant: deciduous subshrub of southeastern Asia having pinnate leaves and clusters of red or purple flowers; a source of indigo dye

Other synonyms of Indigofera tinctoria include indigo.

Indigofera tinctoria (noun)	indigo plant (noun)
deciduous subshrub of southeastern Asia having pinnate leaves and clusters of red or purple flowers; a source of indigo dye	deciduous subshrub of southeastern Asia having pinnate leaves and clusters of red or purple flowers; a source of indigo dye