Profession : La profession, du latin professio, onis traduit comme la « déclaration, déclaration publique, action de se donner comme », est l’activité exercée par une personne dans un domaine. Cette activité procure un salaire, une rémunération, des revenus à celui qui l’exerce. Il constitue également un rôle social au sein de la société.
Par extension, la profession est inhérente à un secteur d’activité particulier. On parle ainsi de profession juridique, politique, médicale et de magistrature.
Certaines professions sont strictement réglementées, c’est-à-dire que leur exercice n’est pas libre et sont spécialement organisées par une loi et des règlementations qui en fixent les modalités d’accès et la déontologie. Profession sur Wikipédia (fr)
 

Profession : A profession is a field of work that has been formally professionalized. It can be defined as a disciplined group of individuals, professionals, who adhere to ethical standards and are recognized by the public as possessing specialized knowledge and skills grounded in a widely recognized body of learning derived from advanced research, education, and training, and who apply this knowledge and exercise these skills in the interest of others.
Professional occupations are founded upon specialized educational training, the purpose of which is to supply disinterested objective counsel and service to others, for direct and definite compensation, wholly apart from expectation of other business gain. Medieval and early modern tradition recognized only three professions: divinity, medicine, and law, which were called the learned professions. In some legal definitions, a profession is not a trade nor an industry.
Some professions change slightly in status and power, but their prestige generally remains stable over time, even if the profession begins to have more required study and formal education. Disciplines formalized more recently, such as architecture, now have equally long periods of study associated with them.
Although professions may enjoy relatively high status and public prestige, not all professionals earn high salaries, and even within specific professions there exist significant differences in salary. In law, for example, a corporate defense lawyer working on an hourly basis may earn several times what a prosecutor or public defender earns. Profession sur Wikipédia (en)