ectrodactyly vs abnormalcy

ectrodactyly and abnormalcy both are nouns.

Word	Noun	Adjective	Verb	Adverb
ectrodactyly	Yes	No	No	No
abnormalcy	Yes	No	No	No

As nouns, abnormalcy is a hypernym of ectrodactyly; that is, abnormalcy is a word with a broader meaning than ectrodactyly:

ectrodactyly: congenital abnormality involving the absence of some fingers or toes
abnormalcy: an abnormal physical condition resulting from defective genes or developmental deficiencies

Other hypernyms of ectrodactyly include abnormality.

ectrodactyly (noun)	abnormalcy (noun)
congenital abnormality involving the absence of some fingers or toes	an abnormal physical condition resulting from defective genes or developmental deficiencies