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.
Internal consistency is very important when developing an overall bank of organizational job descriptions. The employer may want to select specific formats, fonts, logos, and other elements to streamline and standardize the appearance of the documents. Consistent language such as preferred action words and frequently used terms can help create cohesiveness throughout. Internal consistency may also help “ensure equitable comparisons of content across jobs” in justifying employee salary decisions (Milkovich and Newman, 1990).