megalocephaly vs megacephaly

megalocephaly and megacephaly both are nouns.

Word	Noun	Adjective	Verb	Adverb
megalocephaly	Yes	No	No	No
megacephaly	Yes	No	No	No

As nouns, megalocephaly and megacephaly are synonyms defined as:

megalocephaly and megacephaly: an abnormally large head; differs from hydrocephalus because there is no increased intracranial pressure and the overgrowth is symmetrical

Other synonyms of megalocephaly include macrocephaly.

megalocephaly (noun)	megacephaly (noun)
an abnormally large head; differs from hydrocephalus because there is no increased intracranial pressure and the overgrowth is symmetrical	an abnormally large head; differs from hydrocephalus because there is no increased intracranial pressure and the overgrowth is symmetrical