fore-wing vs fore wing

fore-wing and fore wing both are nouns.

Word	Noun	Adjective	Verb	Adverb
fore-wing	Yes	No	No	No
fore wing	Yes	No	No	No

As nouns, fore-wing and fore wing are synonyms defined as:

fore-wing and fore wing: either of the anterior pair of wings on an insect that has four wings

Other synonyms of fore-wing include forewing.

fore-wing (noun)	fore wing (noun)
either of the anterior pair of wings on an insect that has four wings	either of the anterior pair of wings on an insect that has four wings