Answer:
Virtual Machine is the software that act as a computer with same resources utilized by the first operating system and Emulator is also is same thing.
Step-by-step explanation:
Emulator
The Software or Hardware that is used to create a virtual computer using the same resources of computer that is already works on another operating system.
Example
We have installed windows 7 on the computer. Now we need another operating system such as linux on the system at the same time. we install VM ware that is a virtual Machine to enable linux as a guest system on our windows system.