Your Parents
If the parents of people in their 50s & 60s are still alive, they could be referred to as “seniors” without too much of an argument.
If they are fortunate, they could still be reasonably fit and healthy. However many people of this vintage are showing the effects of ageing.
If they are thinking of moving into a retirement village, it would be a good idea to register with a village they like as quickly as possible. Most established retirement villages are full, with a waiting list. If there are villages under construction in your area, they obviously are looking for new buyers.

