acromikria vs abnormalcy

acromikria and abnormalcy both are nouns.

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

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

acromikria: abnormally small extremities (underdeveloped fingers and toes)
abnormalcy: an abnormal physical condition resulting from defective genes or developmental deficiencies

Other hypernyms of acromikria include abnormality.

acromikria (noun)	abnormalcy (noun)
abnormally small extremities (underdeveloped fingers and toes)	an abnormal physical condition resulting from defective genes or developmental deficiencies