concern

(kən-sûrnˈ)

1. To have to do with or relate to: an article that concerns the plight of homeless people.
2. To be of interest or importance to: This problem concerns all of us.
3. To engage the attention of; involve: We concerned ourselves with accomplishing the task at hand.
4. To cause anxiety or uneasiness in: The firm's weak financial posture is starting to concern its stockholders.

1. A matter that relates to or affects one. See Synonyms at affair.
2. Regard for or interest in someone or something.
3. A troubled or anxious state of mind arising from solicitude or interest. See Synonyms at anxiety.
4. A business establishment or enterprise; a firm.
5. A contrivance; a gadget.