Agaric and Pleurotus ostreatus

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

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

Pleurotus ostreatus noun - Edible agaric with a soft greyish cap growing in shelving masses on dead wood.

Agaric and Pleurotus ostreatus are semantically related. You can use "Agaric" instead a noun phrase "Pleurotus ostreatus".