extemporise vs execute

extemporise and execute both are verbs.

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

As verbs, execute is a hypernym of extemporise; that is, execute is a word with a broader meaning than extemporise:

Other hypernyms of extemporise include do, perform.

extemporise (verb)	execute (verb)
perform without preparation	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