Spyware, as its name suggests, is designed to spy on what a user is doing.
Hiding in the background on a computer, this type of malware will collect information without the user knowing, such as credit card details, passwords, and other sensitive information. It is unwanted software that infiltrates computing device.
Adware, or advertising supported software, is software that displays unwanted advertisements on your computer.
Adware programs will tend to serve you pop-up ads, can change your browser’s homepage, add spyware and just bombard your device with advertisements.