early wake-robin vs snow trillium

early wake-robin and snow trillium both are nouns.

Word	Noun	Adjective	Verb	Adverb
early wake-robin	Yes	No	No	No
snow trillium	Yes	No	No	No

As nouns, early wake-robin and snow trillium are synonyms defined as:

early wake-robin and snow trillium: a low perennial white-flowered trillium found in the southeastern United States

Other synonyms of early wake-robin include dwarf-white trillium.

early wake-robin (noun)	snow trillium (noun)
a low perennial white-flowered trillium found in the southeastern United States	a low perennial white-flowered trillium found in the southeastern United States