Wealth is a material good or service that has value to human life (that has economic value.)
Examples of material wealth can be goods for personal consumption (consumer goods) like food or a house; or goods used for the production of other goods (capital goods), such as tool or a factory; or services such as those rendered by a doctor, or musician at a live concert (consumer services), which are consumed instantaneously on production, or services rendered for the production of other goods (human capital).