Merriam-Webster's Collegiate® Dictionary, 11th Edition
CONCERN
I. verb see: certain
Date: 15th century
transitive verb
1. to relate to ; be about , to bear on, to have an influence on ; involve , to be a care, trouble, or distress to , engage , occupy , intransitive verb to be of importance ; matter ,
II. noun
Date: 1655
1. marked interest or regard usually arising through a personal tie or relationship, an uneasy state of blended interest, uncertainty, and apprehension, something that relates or belongs to one ; affair , matter for consideration, an organization or establishment for business or manufacture , contrivance , gadget , see: care