 The idea here is that there are words like ‘health’ (and, if Aristotle is right, ‘being’) that are ambiguous between a ‘primary’ sense of ‘healthy’ is that which applies to things that can enjoy health, such as people, dogs, plants, and perhaps corporations but also a ‘secondary’ sense that involves promoting or signaling the presence of health in the primary sense.  For example, your diet may be healthy not because it is failing to suffer from a disease but because it promotes your health. Your doctor may tell you that you have healthy urine on account of it being a positive indication of your health. This ambiguity is special in that the derivative senses of ‘health’ are all defined in terms of the more primary sense of ‘health’.  The linguistic context doesn’t always settle which sense of is at play: ‘dogs are healthy pets’ can both mean that dogs tend to be themselves healthy and that dogs tend to promote health in their owners.