worm snake vs thunder snake

worm snake and thunder snake both are nouns.

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

As nouns, worm snake and thunder snake are synonyms defined as:

worm snake and thunder snake: small reddish wormlike snake of eastern United States

Other synonyms of worm snake include Carphophis amoenus.

worm snake (noun)	thunder snake (noun)
wormlike burrowing snake of warm regions having vestigial eyes	small reddish wormlike snake of eastern United States
small reddish wormlike snake of eastern United States