Agaricus campestris vs agaric

Agaricus campestris and agaric both are nouns.

Word	Noun	Adjective	Verb	Adverb
Agaricus campestris	Yes	No	No	No
agaric	Yes	No	No	No

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

Agaricus campestris: common edible mushroom found naturally in moist open soil; the cultivated mushroom of commerce
agaric: a saprophytic fungus of the order Agaricales having an umbrellalike cap with gills on the underside

Agaricus campestris (noun)	agaric (noun)
common edible mushroom found naturally in moist open soil; the cultivated mushroom of commerce	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