nanophthalmos vs abnormalcy

nanophthalmos and abnormalcy both are nouns.

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

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

nanophthalmos: condition in which both eyes are abnormally small but otherwise normal
abnormalcy: an abnormal physical condition resulting from defective genes or developmental deficiencies

Other hypernyms of nanophthalmos include abnormality.

nanophthalmos (noun)	abnormalcy (noun)
condition in which both eyes are abnormally small but otherwise normal	an abnormal physical condition resulting from defective genes or developmental deficiencies