yellow adder's tongue vs trout lily

yellow adder's tongue and trout lily both are nouns.

Word	Noun	Adjective	Verb	Adverb
yellow adder's tongue	Yes	No	No	No
trout lily	Yes	No	No	No

As nouns, yellow adder's tongue and trout lily are synonyms defined as:

yellow adder's tongue and trout lily: 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, Erythronium americanum.

yellow adder's tongue (noun)	trout lily (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