- Also known as BIOLOGICAL.
Life refers to that which is integral to biological well-being. It differs from sustenance so that life, or Life, includes the notion of upgrading a biological pattern instead of merely maintaining it. Perhaps the archetypal instance of Life is that of procreation, but also fine food and drink and having a good time qualify.
Furthermore, procreation isn't necessarily Life if it's done merely out of fear of death. Life refers to sustenance of biological excellence, not sustenance of biologicality itself. However, the difference between sustenance and Life is context-dependent, because even fear of death cannot rule out the possibility of genetic excellence. However, fear of death as the only motive of procreation might suggest a lower likelihood of good parenting.