NOTE: refers to the people in the line of work
The medical profession is divided on this issue.
It's the dental profession's largest annual meeting in North America.
Their profession has experienced significant attrition in recent years. (fewer people)
WordNet 3.0 Sense Numbers: 1
NOTE: refers to the activity of the work, not the people (see Sense 1)
Mary is a lawyer by profession.
Bill switched professions mid-career.
Her chosen profession is teaching.
WordNet 3.0 Sense Numbers: 2
John made a profession of disbelief at the conclusions made by the study.
His artwork, especially the pietas, are a tangible profession of his Catholic faith.
Their profession of allegiance to the new government is being questioned.
WordNet 3.0 Sense Numbers: 3, 4