WordNet sense 1 ((computer science) the process of carrying out an instruction by a computer):

instruction execution

WordNet sense 2 ((law) the completion of a legal instrument (such as a contract or deed) by signing it (and perhaps sealing and delivering it) so that it becomes legally binding and enforceable):

execution of instrument

WordNet sense 3 (a routine court order that attempts to enforce the judgment that has been granted to a plaintiff by authorizing a sheriff to carry it out):

writ of execution

WordNet sense 4 (putting a condemned person to death):

executing, capital punishment, death penalty

WordNet sense 5 (the act of accomplishing some aim or executing some order):

implementation, carrying out

WordNet sense 6 (unlawful premeditated killing of a human being by a human being):

murder, slaying

WordNet sense 7 (the act of performing; of doing something successfully; using knowledge as distinguished from merely possessing it):

performance, carrying into action