The term "advanced in life" can be synonymous with various phrases like senior, elderly, mature, aged, older, and senior citizen. The term senior indicates that a person has reached the age of retirement and is considered to be advanced in life. The use of the word elderly is more inclusive, as it encompasses those who are advanced in age but may not have reached the traditional retirement age. The word mature emphasizes the life experience and wisdom gained from a long life. The term aged is a more formal way of describing an individual who is advanced in years. The term older is neutral and widely used for individuals who are advanced in age. Lastly, senior citizen is a polite and respectful way of addressing an individual who has reached a certain age.