perquisite, prerequisite

  edgood  —  Grammar Tips
These words have entirely different meanings. A perquisite is a privilege or a benefit often given in addition to wages or salary. We often refer to the shortened version: perk.

A prerequisite is a previous condition or requirement. Study the example below.

Example: He satisfied all the prerequisites for employment as the CEO, and after he landed the job, he enjoyed myriad perquisites, including use of the corporate jet.