yellow adder's tongue vs Erythronium americanum

yellow adder's tongue and Erythronium americanum both are nouns.

Word	Noun	Adjective	Verb	Adverb
yellow adder's tongue	Yes	No	No	No
Erythronium americanum	Yes	No	No	No

As nouns, yellow adder's tongue and Erythronium americanum are synonyms defined as:

yellow adder's tongue and Erythronium americanum: eastern North American dogtooth having solitary yellow flowers marked with brown or purple and spotted interiors

Other synonyms of yellow adder's tongue include amberbell, trout lily.

yellow adder's tongue (noun)	Erythronium americanum (noun)
eastern North American dogtooth having solitary yellow flowers marked with brown or purple and spotted interiors	eastern North American dogtooth having solitary yellow flowers marked with brown or purple and spotted interiors