A job specification could be considered a more precise job description that details the exact educational degrees, experience, skills, and requirements for a role. In most cases, these terms are used interchangeably and nearly always describe the same document.
Outline the core responsibilities of the position. Make sure your list of responsibilities is detailed but concise. Also emphasize the duties that may be unique to your organization. For example, if you are hiring for an “Event Management” role and the position requires social media expertise to promote events, include this detail to ensure candidates understand the requirements and can determine if they’re qualified.