kingsnake vs colubrid snake

kingsnake and colubrid snake both are nouns.

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

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

kingsnake: any of numerous nonvenomous North American constrictors; feed on other snakes and small mammals
colubrid snake: mostly harmless temperate-to-tropical terrestrial or arboreal or aquatic snakes

Other hypernyms of kingsnake include colubrid.

kingsnake (noun)	colubrid snake (noun)
any of numerous nonvenomous North American constrictors; feed on other snakes and small mammals	mostly harmless temperate-to-tropical terrestrial or arboreal or aquatic snakes