Business is the activity of making one's living or making money by producing or buying and selling goods or services. Simply put, it is "any activity or enterprise entered into for profit. It does not mean it is a company, a corporation, partnership, or have any such formal organization, but it can range from a street peddler to General Motors." The term is also often used colloquially (but not by lawyers or public officials) to refer to a company, but this article will not deal with that sense of the word.
International mostly means something (a company, language, or organization) involving more than a single country. The term international as a word means involvement of, interaction between or encompassing more than one nation, or generally beyond national boundaries. For example, international law, which is applied by more than one country and usually everywhere on Earth, and international language which is a language spoken by residents of more than one country.
International business consists of trades and transactions at a global level. These include the trade of goods, services, technology, capital and/or knowledge.
I never can make out how it is that a knight-errant does not expect to be paid for his trouble, but a peddler-errant always does.
John Ruskin, The Crown of Wild Olive: Three Lectures on Work, Traffic, War (1866), p. 127.
However successful a man may be in his own business, if he turns from that and engages ill a business which he don't understand, he is like Samson when shorn of his locks his strength has departed, and he becomes like other men.
P. T. Barnum, 'Beware of Outside Operations', The Art of Money Getting (1880).
Business has to be fun. For too many people, it's "just a job."
Jack Welch (2001) Jack: Straight from the Gut Ch. 24.