constrictor vs ophidian

constrictor and ophidian both are nouns.

Word	Noun	Adjective	Verb	Adverb
constrictor	Yes	No	No	No
ophidian	Yes	No	No	No

As nouns, ophidian is a hypernym of constrictor; that is, ophidian is a word with a broader meaning than constrictor:

constrictor: any of various large nonvenomous snakes that kill their prey by crushing it in its coils
ophidian: limbless scaly elongate reptile; some are venomous

Other hypernyms of constrictor include serpent, snake.

constrictor (noun)	ophidian (noun)
any of various large nonvenomous snakes that kill their prey by crushing it in its coils	limbless scaly elongate reptile; some are venomous