Agaric and Field mushroom

Agaric noun - A saprophytic fungus of the order Agaricales having an umbrellalike cap with gills on the underside.

Field mushroom and agaric are semantically related. In some cases you can replace phrase "Field mushroom" with "Agaric", this terms are similar.

Field mushroom noun - Common edible mushroom found naturally in moist open soil; the cultivated mushroom of commerce.

Agaric and field mushroom are semantically related. Sometimes you can use "Agaric" instead a noun phrase "Field mushroom".