Grebe and Toadstool

Grebe noun - Small compact-bodied almost completely aquatic bird that builds floating nests; similar to loons but smaller and with lobate rather than webbed feet.

Toadstool and grebe are semantically related. In some cases you can use "Toadstool" instead a noun "Grebe".

Toadstool noun - Common name for an inedible or poisonous agaric (contrasting with the edible mushroom).

Grebe and toadstool are semantically related. You can use "Grebe" instead a noun "Toadstool".