execution vs execute

execution is a noun but execute is not a noun.

Word	Noun	Adjective	Verb	Adverb
execution	Yes	No	No	No
execute	No	No	Yes	No

execution (noun)	execute (noun)
putting a condemned person to death
unlawful premeditated killing of a human being by a human being
the act of performing; of doing something successfully; using knowledge as distinguished from merely possessing it
the act of accomplishing some aim or executing some order
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
(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
(computer science) the process of carrying out an instruction by a computer

execution (verb)	execute (verb)
	sign in the presence of witnesses
	put in effect
	carry out or perform an action
	kill as a means of socially sanctioned punishment
	murder in a planned fashion
	carry out the legalities of
	carry out a process or program, as on a computer or a machine