Explain the difference between passé composé and imparfait. Provide examples.

Passé composé and imparfait are two tenses used to describe or explain actions that have taken place in the past. However, the two tenses cannot be used interchangeably as they have different uses.
The imparfait is used either to relate a set of continuous or repetitive actions, to describe a person or a place, or actions with a certain duration. For example: "chaque matin elle se levait vers onze heures du matin et se promenait dans le parc". It is also used to describe an habit: "pendant cinq ans, chaque dimanche, je rendais visite à ma grand-mère".
Passé composé is used to describe a single, fairly sudden and brief action. For example: "elle a sauté du pont"
The imparfait and passé composé are often used in the same sentence. The imparfait explains the setting of the story, what a person has been doing until something or someone disrupts the situation. For example: "Flore préparait le repas lorsque que soudain la porte a claqué".