What is the meaning of Concern?

That which affects one’s welfare or happiness. A matter of interest to someone.

The placement of interest or worry on a subject.

A worry; a sense that something may be wrong; an identification of a possible problem.

The expression of solicitude, anxiety, or compassion toward a thing or person.

A business, firm or enterprise; a company.

Any set of information that affects the code of a computer program.

To relate or belong to; to have reference to or connection with; to affect the interest of; to be of importance to.

To engage by feeling or sentiment; to interest.

To make somebody worried.

concern (clarification of this definition is needed)

to be concerned about

company, business, concern

concern (organization)

Source: wiktionary.org