congenital abnormality vs congenital defect

congenital abnormality and congenital defect both are nouns.

Word	Noun	Adjective	Verb	Adverb
congenital abnormality	Yes	No	No	No
congenital defect	Yes	No	No	No

As nouns, congenital abnormality and congenital defect are synonyms defined as:

congenital abnormality and congenital defect: a defect that is present at birth

Other synonyms of congenital abnormality include birth defect, congenital anomaly, congenital disorder.

congenital abnormality (noun)	congenital defect (noun)
a defect that is present at birth	a defect that is present at birth