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What is the difference between improvisation¹ and extempore² and where should one use each of these terms?

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closed as general reference by Jasper Loy, Barrie England, Andrew Leach, FumbleFingers, tchrist Jan 1 '13 at 21:09

This question is too basic; it can be definitively and permanently answered by a single link to a standard internet reference source designed specifically to find that type of information.If this question can be reworded to fit the rules in the help center, please edit the question.

Quite apart from anything else, improvisation is a noun, extemporaneous is an adjective and extemporaneously is an adverb. If you are concerned about the semantic difference, a good dictionary should be able to help you. This is general reference, and I am voting to close. – Barrie England Jan 1 '13 at 20:05
Have you read english.blogoverflow.com/2012/12/you-could-look-it-up about definitions? – Andrew Leach Jan 1 '13 at 20:06
@BarrieEngland pls check my edit. I had my homework done before posting here. Hope to see your answer. :-) – Amandeep Jiddewar Jan 2 '13 at 6:29
@AmandeepJiddewar Linking to an etymology doesn't really show effort in figuring out the difference, unles when you include the parts you think are relevant – simchona Jan 2 '13 at 7:02
Pedantic close voters please see MετάEd english.stackexchange.com/a/96328/14666 – Kris Jan 2 '13 at 7:58

Extemporaneously means, strictly speaking “without time to prepare”, though it has also acquired a secondary meaning of “without a prepared text or notes”.¹

Improvisation means an act of improvising. To improvise is to “act without foresight”, that is, without seeing in advance what one will do.²

These words are not always synonymous. Imagine a European classical musician asked to perform a set piece without warning. This musician will perform extemporaneously but without improvising. Now imagine a jazz musician asked to perform without warning. This musician will perform extemporaneously and also improvise the music itself.

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Yes, MetaEd, neverthless, as an another example, during the extemporaneous speech, the speaker also uses an improvisational, +1. – user19148 Jan 1 '13 at 20:24

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