What is the significance of the term "substitute" in economics and how does it impact consumer behavior and market dynamics?

In economics, the term "substitute" refers to a product that can be used in place of another product. This concept is significant because it influences consumer behavior and market dynamics. When consumers have the option to choose between substitutes, they may switch to a cheaper or more desirable product, affecting the demand for the original product. This competition among substitutes can lead to price changes, shifts in market share, and overall market dynamics.