yellow adder's tongue vs amberbell

yellow adder's tongue and amberbell both are nouns.

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

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

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

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

yellow adder's tongue (noun)	amberbell (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