congenital defect vs anomaly

congenital defect and anomaly both are nouns.

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

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

Other hypernyms of congenital defect include defect, anomalousness.

congenital defect (noun)	anomaly (noun)
a defect that is present at birth	(astronomy) position of a planet as defined by its angular distance from its perihelion (as observed from the sun)
	a person who is unusual
	deviation from the normal or common order or form or rule