polysomy vs congenital anomaly

polysomy and congenital anomaly both are nouns.

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

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

polysomy: congenital defect of having one or more extra chromosomes in somatic cells
congenital anomaly: a defect that is present at birth

Other hypernyms of polysomy include birth defect, congenital abnormality, congenital defect, congenital disorder.

polysomy (noun)	congenital anomaly (noun)
congenital defect of having one or more extra chromosomes in somatic cells	a defect that is present at birth