moulting vs molt

moulting and molt both are nouns.

Word	Noun	Adjective	Verb	Adverb
moulting	Yes	No	No	No
molt	Yes	No	Yes	No

As nouns, moulting and molt are synonyms defined as:

moulting and molt: periodic shedding of the cuticle in arthropods or the outer skin in reptiles

Other synonyms of moulting include ecdysis, molting, moult.

moulting (noun)	molt (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

moulting (verb)	molt (verb)
	cast off hair, skin, horn, or feathers