Culver's physic vs Culver's root

Culver's physic and Culver's root both are nouns.

Word	Noun	Adjective	Verb	Adverb
Culver's physic	Yes	No	No	No
Culver's root	Yes	No	No	No

As nouns, Culver's physic and Culver's root are synonyms defined as:

Culver's physic and Culver's root: a tall perennial herb having spikes of small white or purple flowers; common in eastern North America

Other synonyms of Culver's physic include Culvers physic, Culvers root, Veronicastrum virginicum, whorlywort.

Culver's physic (noun)	Culver's root (noun)
a tall perennial herb having spikes of small white or purple flowers; common in eastern North America	a tall perennial herb having spikes of small white or purple flowers; common in eastern North America