[webstartupper]

Interesting - Windows Defender is an antivirus product for Windows 8+. However, for Windows 7 and older, it is only an anti-malware product.

https://en.wikipedia.org/wiki/Windows_Defender

[0942v8653]

What's the difference between the two? Wouldn't all viruses be considered malware? Is there some standard that the software has to live up to to be labeled antivirus?

[insoluble]

Viruses infect executable files (or other files that can potentially contain executable code) while non-virus malware infects machines, browsers, or other types of "hosts".