Professional
Part of speech: adjective
Definition: Of, pertaining to, or in accordance with the standards of a profession That is carried out for money, especially as a livelihood Expert
Part of speech: noun
Definition: A person who belongs to a profession A person who earns his living from a specified activity An expert.
Professionalism
Part of speech: noun
Definition: the status, methods, character or standards of a professional or of a professional organizationthe use of professionals rather than amateurs in any sport etc.
Example sentence: Professionalism is not sportsmanship. If you don't succeed, you won't be in your profession for long. In our society, it's not about good or bad. It's about who's on top.