molter vs moulter

molter and moulter both are nouns.

Word	Noun	Adjective	Verb	Adverb
molter	Yes	No	No	No
moulter	Yes	No	No	No

As nouns, molter and moulter are synonyms defined as:

molter and moulter: an animal (especially birds and arthropods and reptiles) that periodically shed their outer layer (feathers or cuticle or skin or hair)

molter (noun)	moulter (noun)
an animal (especially birds and arthropods and reptiles) that periodically shed their outer layer (feathers or cuticle or skin or hair)	an animal (especially birds and arthropods and reptiles) that periodically shed their outer layer (feathers or cuticle or skin or hair)