Jurisdiction refers to the authority a court has to hear the matter. Jurisdiction involves both the rights the specific court has to rule on the dispute (what type of claim it is) and the ability of the court to enforce a judgment against the defendant. For example, a typical jurisdiction clause may say “Any action to enforce this agreement shall be filed in the Superior Court of California.”

Venue clauses relate to the proper geographical location of the court of jurisdiction. A typical venue clause may read “Any litigation arising out of this Agreement shall be filed in the appropriate Court of jurisdiction in Orange County, California.” However, the choice of venue must be appropriate under the law. In a contract action, venue is appropriate where the contract was entered into, where one of the defendants resides, or where the contract is to be performed.
Source: http://www.martendale.com/business-law/article_Wealth-Strategies-Counsel_762406.htm