Culver's root vs Culver's physic

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

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

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

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

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

Culver's root (noun)	Culver's physic (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