Merriam-Webster's word of the day is vocation. This word can mean a simple occupation or a strong calling to a specific pursuit. For example, someone might know their vocation is marine biology from a young age. Another might pursue a vocation as a doctor by attending medical school. Historically, vocation in English referred to a divine summons for a task, especially a religious one. This meaning stems from its Latin roots meaning "summons" and "to call." The word also functions non-religiously in English. It signifies a strong desire for a particular type of work. Alternatively, it can simply refer to that work itself. Therefore, vocation is synonymous with "calling" and "occupation."