Education
children = juveniles, youngsters
education= learning, instruction, acquiring knowledge
students = pupils
parents = caregivers, guardians, mothers and fathers
schools = educational institutions
society = community, citizens
teachers = educators
Health
health= well-being, physical condition, fitness
healthy= fit, in good condition
unhealthy = unwell, poor medical condition
sick people = patients, people who are unwell
treatment = cure, healing
sickness= medical condition