* As a verb: "The company plans to quadruple its profits within the next five years."
* As an adjective: "The athlete achieved a quadruple axel, a feat never before seen in competition."
* As a noun: "The magician performed a quadruple twist, leaving the audience speechless."
Here are some more specific examples:
* To describe a quantity: "The price of gas has quadrupled since last year."
* To describe an increase: "The population of the city has quadrupled in the last decade."
* To describe a multiplication: "Multiplying a number by four is the same as quadrupling it."