whip-scorpion vs whip scorpion

whip-scorpion and whip scorpion both are nouns.

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

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

whip-scorpion and whip scorpion: nonvenomous arachnid that resembles a scorpion and that has a long thin tail without a stinger

whip-scorpion (noun)	whip scorpion (noun)
nonvenomous arachnid that resembles a scorpion and that has a long thin tail without a stinger	nonvenomous arachnid that resembles a scorpion and that has a long thin tail without a stinger