deer's-ear vs American gentian

deer's-ear and American gentian both are nouns.

Word	Noun	Adjective	Verb	Adverb
deer's-ear	Yes	No	No	No
American gentian	Yes	No	No	No

As nouns, deer's-ear and American gentian are synonyms defined as:

deer's-ear and American gentian: any of various tall perennial herbs constituting the genus Frasera; widely distributed in warm dry upland areas of California, Oregon, and Washington

Other synonyms of deer's-ear include American columbo, columbo, deer's-ears, pyramid plant.

deer's-ear (noun)	American gentian (noun)
any of various tall perennial herbs constituting the genus Frasera; widely distributed in warm dry upland areas of California, Oregon, and Washington	any of various tall perennial herbs constituting the genus Frasera; widely distributed in warm dry upland areas of California, Oregon, and Washington