According to Webster's Dictionary, the word "profession" means business, calling, career, employment, job, line of work, occupation, office, position, sphere, walk of life, and so on. This is also the foundation of the word "professional," which we think of as the person who is employed on the said work or occupation. According to Webster's, professional means adept, competent, skilled, efficient, experienced, masterly, polished, practiced, proficient, qualified, slick, trained, and so on.