What is the difference between a corporation, a foundation, or a trust?

Corporations are generally used for profit-making ventures involving commercial activities such as securities trading, banking, international trade, asset ownership, etc. Private interest foundations are generally used for non-profit activities such as charitable giving, receiving or giving, etc., but can also be used to hold purposes such as ownership of a Panamanian company or any other type of business.
Trusts are generally used for purposes such as owning companies or holding assets.