What is the difference between Swapping and Paging?

Answer Posted / manoj from sai college amritsa

paging::::

In computer operating systems there are various ways in
which the operating system can store and retrieve data from
secondary storage for use in main memory. One such memory
management scheme is referred to as paging. In the paging
memory-management scheme, the operating system retrieves
data from secondary storage in same-size blocks called
pages. The main advantage of paging is that it allows the
physical address space of a process to be noncontiguous.
Prior to paging, systems had to fit whole programs into
storage contiguously which caused various storage and
fragmentation problems.[1]
Paging is an important part of virtual memory implementation
in most contemporary general-purpose operating systems,
allowing them to use disk storage for data that does not fit
into physical Random-access memory (RAM). Paging is usually
implemented as architecture-specific code built into the
kernel of the operating system.

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