what is difference between java script and ECMA Script

ECMA Script:
                         ECMA Stands for European computer manufacture Association.ECMA Script is the offical name for JAVASCRIPT for accessing XML elements.

JAVASCRIPT:
                         Java Script is a scripting language most often used for client-side web development. It was the originating dialect of the ECMA Script Standard. ECMA Script and Live Script are other names for JavaSript. The current JavaScript That is supported in browers is ECMA Revision 3.