moult vs molting

moult and molting both are nouns.

Word	Noun	Adjective	Verb	Adverb
moult	Yes	No	Yes	No
molting	Yes	No	No	No

As nouns, moult and molting are synonyms defined as:

moult and molting: periodic shedding of the cuticle in arthropods or the outer skin in reptiles

Other synonyms of moult include ecdysis, molt, moulting.

moult (noun)	molting (noun)
periodic shedding of the cuticle in arthropods or the outer skin in reptiles	periodic shedding of the cuticle in arthropods or the outer skin in reptiles

moult (verb)	molting (verb)
cast off hair, skin, horn, or feathers