demo
US /ˈdem.oʊ/
UK /ˈdem.oʊ/

1.
a demonstration of a product or idea
:
•
The company gave a live demo of their new software.
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Can I get a quick demo of how this machine works?
2.
a recording, especially of music, made to demonstrate the capabilities of a performer or group
:
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The band sent a demo tape to several record labels.
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Her first demo track got a lot of attention online.
1.
to demonstrate a product or idea
:
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They will demo the new features at the conference.
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Can you demo that trick again?