alumroot vs herbaceous plant

alumroot and herbaceous plant both are nouns.

Word	Noun	Adjective	Verb	Adverb
alumroot	Yes	No	No	No
herbaceous plant	Yes	No	No	No

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

alumroot: any of several herbs of the genus Heuchera
herbaceous plant: a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests

Other hypernyms of alumroot include herb.

alumroot (noun)	herbaceous plant (noun)
any of several herbs of the genus Heuchera	a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests