Colubrid snake and Hognose snake

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

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

Hognose snake noun - Harmless North American snake with upturned nose; may spread its head and neck or play dead when disturbed.

Colubrid snake and hognose snake are semantically related. You can use "Colubrid snake" instead a noun phrase "Hognose snake".