Elastic:Elastic describes a situation where the demand or supply for a good or service is highly responsive to changes in price, with the quantity demanded or supplied changing by a larger proportion than the change in price.
Unit Elastic:Unit elastic refers to a situation where the percentage change in quantity demanded or supplied is equal to the percentage change in price, resulting in a unitary elasticity coefficient.
Perfectly Inelastic:Perfectly inelastic describes a situation where the demand or supply for a good or service is completely unresponsive to changes in price, with the quantity demanded or supplied remaining constant regardless of price changes.