whip snake vs whip-snake

whip snake and whip-snake both are nouns.

Word	Noun	Adjective	Verb	Adverb
whip snake	Yes	No	No	No
whip-snake	Yes	No	No	No

As nouns, whip snake and whip-snake are synonyms defined as:

whip snake and whip-snake: any of several small fast-moving snakes with long whiplike tails

Other synonyms of whip snake include whipsnake.

whip snake (noun)	whip-snake (noun)
any of several small fast-moving snakes with long whiplike tails	any of several small fast-moving snakes with long whiplike tails