snow plant vs wild flower

snow plant and wild flower both are nouns.

Word	Noun	Adjective	Verb	Adverb
snow plant	Yes	No	No	No
wild flower	Yes	No	No	No

As nouns, wild flower is a hypernym of snow plant; that is, wild flower is a word with a broader meaning than snow plant:

snow plant: a fleshy bright red saprophytic plant of the mountains of western North America that appears in early spring while snow is on the ground
wild flower: wild or uncultivated flowering plant

Other hypernyms of snow plant include wildflower.

snow plant (noun)	wild flower (noun)
a fleshy bright red saprophytic plant of the mountains of western North America that appears in early spring while snow is on the ground	wild or uncultivated flowering plant