namespace
1.
[General]
A domain of identifiers.
2.
[File System]
The set of valid names recognized by a file system.
3.
[Management]
In CIM and WBEM, a collection of object definitions and instances that are logically consistent.
4.
[NVMe]
Formatted non-volatile storage that may be accessed by a host.
For example, an NVMe namespace may contain logical blocks for storing data or key-value pairs for storing data.