Capital: Wealth that can be used to produce more wealth without loss by consumption or waste.
The generic concept is applicable to natural capital, knowledge capital and so on (i.e., forms of life capital). False reduction of life capital to money capital is the ultimate onto-axiological confusion of the era.
Source: ‘What is Good? What is Bad? The Value of All Values across Time, Place and Theories’ by John McMurtry, Philosophy and World Problems, Volume I-III, UNESCO in partnership with Encyclopedia of Life Support Systems: Oxford, 2004-11.