cheiloschisis vs cleft lip

cheiloschisis and cleft lip both are nouns.

Word	Noun	Adjective	Verb	Adverb
cheiloschisis	Yes	No	No	No
cleft lip	Yes	No	No	No

As nouns, cheiloschisis and cleft lip are synonyms defined as:

cheiloschisis and cleft lip: a congenital cleft in the middle of the upper lip

Other synonyms of cheiloschisis include harelip.

cheiloschisis (noun)	cleft lip (noun)
a congenital cleft in the middle of the upper lip	a congenital cleft in the middle of the upper lip