Aging(老化)和Senescence(衰老) 的区别：

Cellular senescence is a process that is highly related to cellular ageing.

The key difference between aging and senescence is that aging is the process of deterioration of cells with time while senescence is a result of aging where the cells stop dividing and reach a state of arrest. 

Difference Between Aging and Senescence | Compare the Difference Between Similar Terms

The main difference between aging and senescence is that aging is an intrinsic feature of living beings as a result of time, environmental factors and genetics, which lead to the progressive loss of physiological integrity, leading to the vulnerability of death whereas senescence is an irreversible form of long-term cell-cycle arrest, caused by excessive intracellular or extracellular stress or damage.

What is the Difference Between Aging and Senescence - Pediaa.Com

Senescence refers to all collective, progressive and deteriorative process which ultimately leads to complete loss of organisation and function whereas Ageing includes all the chemical and structure changes which occurs during the life span of a plant and animals or its organs.

Differences between Senescence and Ageing - Biologysir

Aging is the process of becoming older or more mature while senescence is (biology) the state or process of ageing, especially in humans; old age.

Aging vs Senescence - What's the difference? | WikiDiff