worm snake vs colubrid snake

worm snake and colubrid snake both are nouns.

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

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

worm snake: small reddish wormlike snake of eastern United States
colubrid snake: mostly harmless temperate-to-tropical terrestrial or arboreal or aquatic snakes

Other hypernyms of worm snake include colubrid.

worm snake (noun)	colubrid snake (noun)
wormlike burrowing snake of warm regions having vestigial eyes	mostly harmless temperate-to-tropical terrestrial or arboreal or aquatic snakes
small reddish wormlike snake of eastern United States