Indian pipe vs wild flower

Indian pipe and wild flower both are nouns.

Word	Noun	Adjective	Verb	Adverb
Indian pipe	Yes	No	No	No
wild flower	Yes	No	No	No

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

Indian pipe: small waxy white or pinkish-white saprophytic woodland plant having scalelike leaves and a nodding flower; turns black with age
wild flower: wild or uncultivated flowering plant

Other hypernyms of Indian pipe include wildflower.

Indian pipe (noun)	wild flower (noun)
small waxy white or pinkish-white saprophytic woodland plant having scalelike leaves and a nodding flower; turns black with age	wild or uncultivated flowering plant