Electric ray and Stingray

Electric ray noun - Any sluggish bottom-dwelling ray of the order Torpediniformes having a rounded body and electric organs on each side of the head capable of emitting strong electric discharges.

Stingray and electric ray are semantically related. In some cases you can use "Stingray" instead a noun phrase "Electric ray".

Stingray noun - Large venomous ray with large barbed spines near the base of a thin whiplike tail capable of inflicting severe wounds.

Electric ray and stingray are semantically related. You can use "Electric ray" instead a noun "Stingray".