sunray vs wildflower

sunray and wildflower both are nouns.

Word	Noun	Adjective	Verb	Adverb
sunray	Yes	No	No	No
wildflower	Yes	No	No	No

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

sunray: herb having a basal cluster of grey-green leaves and leafless stalks each with a solitary broad yellow flower head; desert areas Idaho to Arizona
wildflower: wild or uncultivated flowering plant

Other hypernyms of sunray include wild flower.

sunray (noun)	wildflower (noun)
a ray of sunlight	wild or uncultivated flowering plant
a ray of artificial ultraviolet light from a sunray lamp
herb having a basal cluster of grey-green leaves and leafless stalks each with a solitary broad yellow flower head; desert areas Idaho to Arizona