meromelia vs congenital anomaly

meromelia and congenital anomaly both are nouns.

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

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

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

meromelia (noun)	congenital anomaly (noun)
congenital absence of part of an arm or leg	a defect that is present at birth