a calling characterized by a certain expertise or specialized area of knowledge, an inherent responsibility to the client to provide the expertise, a formalized institutional identity, and institutional and individual integrity

a group of people who are organized around a specialized body of knowledge, usually in the interests of society

an established field of expertise governed by standards of performance and behavior to which practitioners comply

a self-regulating, meritocratic, public-service association of workers in a special field

a specialized work function within society,