Degression refers to a tendency to descend or decrease; it implies a progressive decline in an item, such as value, over time. An example includes the deterioration in a company’s market share for its product line.
Value represents the worth of all the rights arising from ownership, commonly referring to the quantity of one thing that will be exchanged for another.
Worth refers to the inherent value of a commodity, good, service, or other economic factor. It is often measured beyond mere price in various contexts, such as comparable worth programs that aim for wage equity.
