Professional associationA professional association (also called a professional body, professional organization, or professional society) is a group that usually seeks to further a particular profession, the interests of individuals and organisations engaged in that profession, and the public interest. In the United States, such an association is typically a nonprofit business league for tax purposes. In the UK, they may take a variety of legal forms.
ProfessionA profession is a field of work that has been successfully professionalized. It can be defined as a disciplined group of individuals, professionals, who adhere to ethical standards and who hold themselves out as, and are accepted by the public as possessing special knowledge and skills in a widely recognised body of learning derived from research, education and training at a high level, and who are prepared to apply this knowledge and exercise these skills in the interest of others.
CraftA craft or trade is a pastime or an occupation that requires particular skills and knowledge of skilled work. In a historical sense, particularly the Middle Ages and earlier, the term is usually applied to people occupied in small scale production of goods, or their maintenance, for example by tinkers. The traditional term craftsman is nowadays often replaced by artisan and by craftsperson. Historically, the more specialized crafts with high-value products tended to concentrate in urban centers and their practitioners formed guilds.
TradespersonA tradesperson is a skilled worker that specializes in a particular trade. Tradespeople usually gain their skills through work experience, on-the-job training, an apprenticeship program or formal education. As opposed to a craftsperson or an artisan, a tradesperson is not necessarily restricted to manual work. In Victorian England: The terms "skilled worker," "craftsman," "artisan," and "tradesman" were used in senses that overlap. All describe people with specialized training in the skills needed for a particular kind of work.