mannikin vs mannequin

mannikin and mannequin both are nouns.

Word	Noun	Adjective	Verb	Adverb
mannikin	Yes	No	No	No
mannequin	Yes	No	No	No

As nouns, mannikin and mannequin are synonyms defined as:

Other synonyms of mannikin include form, manakin, manikin.

As nouns, mannikin and mannequin are synonyms defined as:

Other synonyms of mannikin include fashion model, manakin, manikin, model.

mannikin (noun)	mannequin (noun)
a life-size dummy used to display clothes	a life-size dummy used to display clothes
a person who is very small but who is not otherwise deformed or abnormal	a woman who wears clothes to display fashions
a woman who wears clothes to display fashions