concern-n; 4 Senses

Sense Number 1: a marked interest in, or focus about, something

Commentary: CONCERN[+state][+mental][+interest][+marked][+about_something]
NOTE: implies cognitive focus, attention, interest about something, feeling responsible

Examples:
Oil reserves are the concern of the Energy Department. (what they focus on, think about)
The safety of his ship is a captain's main concern. (he is focused on it, not fearful)
How they spend their money is no concern of ours.
The health of the economy should be of concern to any serious candidate.

Mappings:
PropBank: concern.01
WordNet 3.0 Sense Numbers: 1

Sense Number 2: personal feelings of anxiousness, worry

Commentary: CONCERN[+state][+emotional][+worry][+about_something] Implies emotional feelings of worry, anxiety

Examples:
The accident has led to concerns of safety by the flying public.
They hushed up the scandal out of concern about the public reaction.
I always feel some concern when John is driving my car.
The doctor told the patient that the skin bumps were no cause for concern.
Parents' concern over their children's binge drinking was addressed by the dean of the college.

Mappings:
PropBank: concern.01
WordNet 3.0 Sense Numbers: 1

Sense Number 3: a business or commercial enterprise

Commentary: CONCERN[+entity][+organization][+enterprise][+commercial] A commercial enterprise, a business

Examples:
There has been an increase in bankruptcies among retail concerns of that region.
It's a family-run concern that makes leather handbags and suitcases.

Mappings:
PropBank: NM
WordNet 3.0 Sense Numbers: 1

Sense Number 4: none of the above

Commentary: Automatically generated NOTA sense (bbn)

Examples:

Mappings:
PropBank: NM