- An activity that someone is engaged in
- occupation: the principal activity in your life that you do to earn money; "he's not in my line of business"
- A person's regular occupation, profession, or trade
- A person's concern
- a commercial or industrial enterprise and the people who constitute it; "he bought his brother's business"; "a small mom-and-pop business"; "a racially integrated business concern"
- commercial enterprise: the activity of providing goods and services involving financial and commercial and industrial aspects; "computers are now widely used in business"