The instant clone feature has its own set of terminology, which uses some terms in ways specific to the feature.

stun
To stop the clock of a virtual machine temporarily, preventing guest operations during an instant clone operation.
freeze
To stop the clock of a virtual machine indefinitely, allowing a series of instant clone operations that reproduce the exact process state of the source virtual machine.
suspend
Save the state of a virtual machine so applications can resume, and put it to sleep.
resume
Continue running the virtual machine that was suspended, including its applications.
unstun
To release a stunned source virtual machine, allowing I/O operations to proceed.
source
A virtual machine that is cloned during an instant clone operation.
instant clone
  1. An operation that quickly creates a new virtual machine that is an exact copy of a source virtual machine.
  2. A new virtual machine created by an instant clone operation.