abnormality vs regression

Other hyponyms of abnormality include acardia, acephalia, acephalism, acephaly, acorea, acromicria, acromikria, acromphalus, amastia, aneuploidy, anorchia, anorchidism, anorchism, asynclitism, obliquity, atresia, brachydactylia, brachydactyly, cryptorchidism, cryptorchidy, cryptorchism, deviated septum, dextrocardia, ectrodactyly, erethism, fetal distress, foetal distress, hepatomegaly, megalohepatia, inversion, heterotaxy, transposition, pneumothorax, macrencephaly, hydatid mole, hydatidiform mole, molar pregnancy, hydramnios, hypervitaminosis, hypospadias, lagophthalmos, mental abnormality, nanophthalmos, palmature, dysplasia, hydrocephalus, hydrocephaly, abrachia, progeria, atypicality, untypicality, arrested development, fixation, infantile fixation, aberrance, aberrancy, aberration, deviance, cyclopia, spinal curvature, subnormality, anomalousness, anomaly, gynecomastia, infantilism, macrocephaly, megacephaly, megalocephaly, microbrachia, microcephalus, microcephaly, nanocephaly, pachycheilia, phimosis, irritation, retroflection, retroflexion, retroversion, sequela, squint, strabismus, torticollis, wryneck, varix.