Colubrid snake and Ring-necked snake

Colubrid snake noun - Mostly harmless temperate-to-tropical terrestrial or arboreal or aquatic snakes.

Ring-necked snake and colubrid snake are semantically related. In some cases you can replace phrase "Ring-necked snake" with "Colubrid snake", this phrases are similar.

Ring-necked snake noun - Any of numerous small nonvenomous North American snakes with a yellow or orange ring around the neck.

Colubrid snake and ring-necked snake are semantically related. You can use "Colubrid snake" instead a noun phrase "Ring-necked snake".