ground snake vs colubrid

ground snake and colubrid both are nouns.

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

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

ground snake: small shy brightly-ringed terrestrial snake of arid or semiarid areas of western North America
colubrid: mostly harmless temperate-to-tropical terrestrial or arboreal or aquatic snakes

Other hypernyms of ground snake include colubrid snake.

ground snake (noun)	colubrid (noun)
small shy brightly-ringed terrestrial snake of arid or semiarid areas of western North America	mostly harmless temperate-to-tropical terrestrial or arboreal or aquatic snakes