hognose snake vs colubrid snake

hognose snake and colubrid snake both are nouns.

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

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

hognose snake: harmless North American snake with upturned nose; may spread its head and neck or play dead when disturbed
colubrid snake: mostly harmless temperate-to-tropical terrestrial or arboreal or aquatic snakes

Other hypernyms of hognose snake include colubrid.

hognose snake (noun)	colubrid snake (noun)
harmless North American snake with upturned nose; may spread its head and neck or play dead when disturbed	mostly harmless temperate-to-tropical terrestrial or arboreal or aquatic snakes