* The theater company's repertory included classics like "Hamlet" and "A Midsummer Night's Dream." (This uses "repertory" to refer to the collection of plays a company performs.)
* The doctor consulted the repertory of available medications to find the best treatment for the patient. (This uses "repertory" to refer to a collection of things, in this case, medicines.)
* The musician's repertory was vast, encompassing everything from Baroque to modern jazz. (This uses "repertory" to refer to a collection of music or pieces a performer knows.)
* The ballerina's repertory of roles was impressive, showcasing her versatility. (This uses "repertory" to refer to the collection of roles an actor or dancer performs.)
As you can see, "repertory" is often used to describe a collection of things, like plays, medicines, music, or roles.