birth defect vs anomalousness

birth defect and anomalousness both are nouns.

Word	Noun	Adjective	Verb	Adverb
birth defect	Yes	No	No	No
anomalousness	Yes	No	No	No

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

Other hypernyms of birth defect include defect, anomaly.

birth defect (noun)	anomalousness (noun)
a defect that is present at birth	deviation from the normal or common order or form or rule