congenital anomaly vs congenital abnormality

congenital anomaly and congenital abnormality both are nouns.

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

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

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

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

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