ague root vs crow corn

ague root and crow corn both are nouns.

Word	Noun	Adjective	Verb	Adverb
ague root	Yes	No	No	No
crow corn	Yes	No	No	No

As nouns, crow corn is a hypernym of ague root; that is, crow corn is a word with a broader meaning than ague root:

ague root: colicroot having a scurfy or granuliferous perianth and white flowers; southeastern United States
crow corn: any of several perennials of the genus Aletris having grasslike leaves and bitter roots reputed to cure colic

Other hypernyms of ague root include colic root, colicroot, star grass, unicorn root.

ague root (noun)	crow corn (noun)
colicroot having a scurfy or granuliferous perianth and white flowers; southeastern United States	any of several perennials of the genus Aletris having grasslike leaves and bitter roots reputed to cure colic