erethism vs abnormalcy

erethism and abnormalcy both are nouns.

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

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

erethism: an abnormally high degree of irritability or sensitivity to stimulation of an organ or body part
abnormalcy: an abnormal physical condition resulting from defective genes or developmental deficiencies

Other hypernyms of erethism include abnormality.

erethism (noun)	abnormalcy (noun)
an abnormally high degree of irritability or sensitivity to stimulation of an organ or body part	an abnormal physical condition resulting from defective genes or developmental deficiencies