fontanel vs fontanelle

fontanel and fontanelle both are nouns.

Word	Noun	Adjective	Verb	Adverb
fontanel	Yes	No	No	No
fontanelle	Yes	No	No	No

As nouns, fontanel and fontanelle are synonyms defined as:

fontanel and fontanelle: any membranous gap between the bones of the cranium in an infant or fetus

Other synonyms of fontanel include soft spot.

fontanel (noun)	fontanelle (noun)
any membranous gap between the bones of the cranium in an infant or fetus	any membranous gap between the bones of the cranium in an infant or fetus