Meaning : Something that interests you because it is important or affects you.
Example :
The safety of the ship is the captain's concern.
Meaning : A feeling of sympathy for someone or something.
Example :
She felt strong concern for those less fortunate.
A feeling of lack of concern.
unconcernMeaning : A commercial or industrial enterprise and the people who constitute it.
Example :
He bought his brother's business.
A small mom-and-pop business.
A racially integrated business concern.
Synonyms : business, business concern, business organisation, business organization