The difference between Userland and Userspace
When used as nouns, userland means a conceptual space outside the kernel in which a user's applications can run without the risk of damage to the operating system, whereas userspace means the area of memory used for a user's applications, etc., as opposed to that reserved for the operating system kernel.
check bellow for the other definitions of Userland and Userspace
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Userland as a noun (computing, informal):
A conceptual space outside the kernel in which a user's applications can run without the risk of damage to the operating system.
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Userspace as a noun (computing):
The area of memory used for a user's applications, etc., as opposed to that reserved for the operating system kernel.
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Userspace as a noun (internet):
A namespace on a wiki used by individual users for personal details and discussions.