Are js and C-sharp using the async/await method for the opposite purpose?

node has its own asynchronous feature. Does async/await execute code in a Synchronize way?
while C-sharp comes with Synchronize feature, is async/await designed to execute code asynchronously?
is this understood correctly?

Aug.01,2021

actually has the same purpose. C-sharp async await simplifies multithreaded programming.

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MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e5411d-45260.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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