scarlet bugler vs wildflower

scarlet bugler and wildflower both are nouns.

Word	Noun	Adjective	Verb	Adverb
scarlet bugler	Yes	No	No	No
wildflower	Yes	No	No	No

As nouns, wildflower is a hypernym of scarlet bugler; that is, wildflower is a word with a broader meaning than scarlet bugler:

scarlet bugler: plant with bright red tubular flowers in long narrow clusters near tips of erect stems; coastal ranges from central California southward
wildflower: wild or uncultivated flowering plant

Other hypernyms of scarlet bugler include wild flower.

scarlet bugler (noun)	wildflower (noun)
plant with bright red tubular flowers in long narrow clusters near tips of erect stems; coastal ranges from central California southward	wild or uncultivated flowering plant