sandy mushroom vs agaric

sandy mushroom and agaric both are nouns.

Word	Noun	Adjective	Verb	Adverb
sandy mushroom	Yes	No	No	No
agaric	Yes	No	No	No

As nouns, agaric is a hypernym of sandy mushroom; that is, agaric is a word with a broader meaning than sandy mushroom:

sandy mushroom: an edible agaric that fruits in great clusters (especially in sandy soil under cottonwood trees)
agaric: a saprophytic fungus of the order Agaricales having an umbrellalike cap with gills on the underside

sandy mushroom (noun)	agaric (noun)
an edible agaric that fruits in great clusters (especially in sandy soil under cottonwood trees)	a saprophytic fungus of the order Agaricales having an umbrellalike cap with gills on the underside
	fungus used in the preparation of punk for fuses