Substitute Goods: Substitute goods are products that can be used as alternatives for each other. If the price of one substitute decreases, it may cause a decrease in demand for another.
Complementary Goods: Complementary goods are products that are typically consumed together. If the price of one complementary good increases, it may cause a decrease in demand for the other.
Shift in Supply: A shift in supply refers to changes in factors affecting supply (such as input costs or technology), resulting in an entire movement of the supply curve either leftward (decrease) or rightward (increase).