Highlight the day-to-day activities of the position. This will help candidates understand the work environment and the activities they will be exposed to on a daily basis. This level of detail will help the candidate determine if the role and company are a right fit, helping you attract the best candidates for your position.
The term ‘job description’ is a flexible one, but here I’ll be using it in a modern context, to describe all of the copy you’d use on an online job board. It usually includes information like job title, duties, salary, etc.