king's spear vs asphodel

king's spear and asphodel both are nouns.

Word	Noun	Adjective	Verb	Adverb
king's spear	Yes	No	No	No
asphodel	Yes	No	No	No

As nouns, asphodel is a hypernym of king's spear; that is, asphodel is a word with a broader meaning than king's spear:

king's spear: asphodel with leafy stem and fragrant yellow flowers
asphodel: any of various chiefly Mediterranean plants of the genera Asphodeline and Asphodelus having linear leaves and racemes of white or pink or yellow flowers

king's spear (noun)	asphodel (noun)
asphodel with leafy stem and fragrant yellow flowers	any of various chiefly Mediterranean plants of the genera Asphodeline and Asphodelus having linear leaves and racemes of white or pink or yellow flowers