The professional is a person specialized in his branch of industry or his trade association. The professional allows to characterize the quality of the work of somebody having Expérience.

; Work One says of a person who provides a work professional quality that it shows professionalism.

The professional is often compared, even opposite with the Amateur and defined in opposition to this one. In the trade, one opposes the professional to the Particulier .

; Sports In the sporting medium, the professional draws from the Profit S of its sport in sufficient quantity to live (contrary to the amateur which carries on an activity with a low or zero remuneration).

; Artistic medium The distinction between professional and amateur in music, for example, is not inevitably relevant.

; Notes and references