acromphalus vs abnormalcy

acromphalus and abnormalcy both are nouns.

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

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

acromphalus: abnormal protrusion of the navel; sometimes the start of umbilical hernia
abnormalcy: an abnormal physical condition resulting from defective genes or developmental deficiencies

Other hypernyms of acromphalus include abnormality.

acromphalus (noun)	abnormalcy (noun)
abnormal protrusion of the navel; sometimes the start of umbilical hernia	an abnormal physical condition resulting from defective genes or developmental deficiencies