retirement home;  old people's home;  senior citizens' home
 care for the aged;  elderly care;  aged care
 senile plaque;  neuritic plaque;  senile druse
 rehabilitation facility for the elderly
 nursing home;  welfare facility for the elderly
 impoverished elderly;  poor senior citizens
 problems of the elderly;  problems of an aging society
 old people's talk;  sociolect of the elderly
 historical practice of abandoning old people in the mountains, etc.
 medical insurance for the elderly