"Virus is a part of Malware. It is a contagious piece of code that infects the other software on the host system and spreads itself once it is run.
Malware as a whole includes viruses along with other types of software such as trojan horses, worms, spyware, and adware.
Spyware is a type of malicious software that spies on you and tracks your internet activities.
Adware is also known as advertising-supported software which spreads malware through Ads.
Spyware is software that monitors your computer and reveals collected information to an interested party.
Adware is a software that automatically displays advertisement such as banners or pop-ups when a user is online.
Virus is a program code that attaches itself to a program or file and infects other computers through that file. Malware is a program used to disrupt computer operations, gather sensitive data or gain access to private systems.