Plato had a word for it.
D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D006233:Persons with Disabilities; D004495:Education of Persons with Intellectual Disabilities; D004519:Education, Special; D005260:Female; D006806:Human Rights; D006801:Humans; D007223:Infant; D008297:Male; D014481:United States