Lifespan and Senility

Lifespan noun - The period during which something is functional (as between birth and death).

Senility and lifespan are semantically related. in age topic. In some cases you can use "Senility" instead a noun "Lifespan".

Senility noun - The state or period of mental decline that typically accompanies old age.

Lifespan and senility are semantically related. You can use "Lifespan" instead a noun "Senility".