ring snake vs colubrid snake

ring snake and colubrid snake both are nouns.

Word	Noun	Adjective	Verb	Adverb
ring snake	Yes	No	No	No
colubrid snake	Yes	No	No	No

As nouns, colubrid snake is a hypernym of ring snake; that is, colubrid snake is a word with a broader meaning than ring snake:

ring snake: any of numerous small nonvenomous North American snakes with a yellow or orange ring around the neck
colubrid snake: mostly harmless temperate-to-tropical terrestrial or arboreal or aquatic snakes

Other hypernyms of ring snake include colubrid.

ring snake (noun)	colubrid snake (noun)
harmless European snake with a bright yellow collar; common in England	mostly harmless temperate-to-tropical terrestrial or arboreal or aquatic snakes
any of numerous small nonvenomous North American snakes with a yellow or orange ring around the neck