Many, but not all, are things that can be bought with money. His long life makes me happier, wiser, and therefore wealthier than I would have been otherwise. Therefore, I know the difference. An increase in wealth. The world has grown wealthier.
Bad investments fail to do so.
A young man gives up many of life's pleasures to devote more time to his experiments. Thomas Alva Edison's sacrifice created a subsequent stream of wealth for him and for society. It was a good investment. I seriously doubt that you'll find these precise definitions in the glossary of any economics textbook. However, after twenty-five years of thinking about them, I'm pretty sure this is what they all really mean.