cleft lip vs congenital defect

cleft lip and congenital defect both are nouns.

Word	Noun	Adjective	Verb	Adverb
cleft lip	Yes	No	No	No
congenital defect	Yes	No	No	No

As nouns, congenital defect is a hypernym of cleft lip; that is, congenital defect is a word with a broader meaning than cleft lip:

Other hypernyms of cleft lip include birth defect, congenital abnormality, congenital anomaly, congenital disorder.

cleft lip (noun)	congenital defect (noun)
a congenital cleft in the middle of the upper lip	a defect that is present at birth