Each of these questions have no simple specific answer for which everyone would agree. However, here is one response, one set of responses.
Economic growth is the increase in the production of goods and services.
Economic development in simple terms is wealth creation. Wealth is property value and incomes. In smaller communities the opening of any store is economic development. In larger communities industrial, distribution and warehousing tends to be the focus and definition of economic development. In economic development the wealth must be able to be measured in order to determine the level of progress.