old people; the aged; generally refers to people aged 60 and over

The period of life covering both middle age and old age; middle-aged and elderly people

A brain disease occurring in old age characterized by memory loss, personality changes, and physical or mental impairment, most commonly referring to Alzheimer's disease.

Diseases commonly occurring in old age, such as coronary heart disease, high blood pressure, and diabetes; senility

The period of life following middle age, typically starting from age sixty until the end of life.

senile pigment spots that appear on the skin of elderly people

The process of a population becoming older as the proportion of elderly people increases; aging of the population. Also written as [[老龄化|老齡化|lao3 ling2 hua4]] or [[高龄化|高齡化|gao1 ling2 hua4]].

middle-aged and elderly people; people of middle age and above

the later part of life; old age

colloquial term for many years ago; in olden times

The number of people in a population over a certain age, usually 60 or 65 years old.

Apartment-style housing specifically for elderly residents, typically providing services like dining, sanitation, entertainment, and healthcare.

The branch of medicine focusing on the health care of elderly people, including the prevention and treatment of diseases related to aging.

A school or institute established for the elderly to continue learning and enrichment; often provides courses on hobbies, technology, and health.

a progressive mental deterioration that occurs in old age, characterized by memory loss and cognitive decline

Disease caused by brain tissue degeneration in old age; also known as [[老人痴呆症|老人痴呆症|lao3 ren2 chi1 dai1 zheng4]], [[老年痴呆症|老年痴呆症|lao3 nian2 chi1 dai1 zheng4]], or [[老人失智症|老人失智症|lao3 ren2 shi1 zhi4 zheng4]]

The period of life from age sixty until death; characterized by a decline in physical strength and energy.

senile dementia; Alzheimer's disease