Heuchera sanguinea vs alumbloom

Heuchera sanguinea and alumbloom both are nouns.

Word	Noun	Adjective	Verb	Adverb
Heuchera sanguinea	Yes	No	No	No
alumbloom	Yes	No	No	No

As nouns, alumbloom is a hypernym of Heuchera sanguinea; that is, alumbloom is a word with a broader meaning than Heuchera sanguinea:

Heuchera sanguinea: perennial plant of the western United States having bright red flowers in feathery spikes; used as an ornamental
alumbloom: any of several herbs of the genus Heuchera

Other hypernyms of Heuchera sanguinea include alumroot.

Heuchera sanguinea (noun)	alumbloom (noun)
perennial plant of the western United States having bright red flowers in feathery spikes; used as an ornamental	any of several herbs of the genus Heuchera