Areas of expertise refer to the areas in which a person has specialized knowledge or skills. This can include metiers, FORTES, SPHERES, and BAILIWICKS. Metiers are occupations or trades that require special training or skill. FORTES are strong points or areas of expertise. SPHERES are areas of knowledge or activity. BAILIWICKS are areas of authority or responsibility. All of these terms refer to areas of expertise in which a person has specialized knowledge or skills.