We include both terms anti-virus and anti-malware here intentionally as they are two different products.
Viruses are typically code that replicates itself to allow it to spread and generally wreaks havoc with your computer, damaging files or corrupting your system.
Malware, on the other hand, is a broader term that refers to all types of malicious software, including Trojans, spyware, worms, adware, ransomware, and yes, viruses. So the logic follows: all viruses are malware but not all malware are viruses. (https://blog.malwarebytes.com/101/2015/09/whats-the-difference-between-antivirus-and-anti-malware/)
Are you confused yet?
What this means to you is that another key element of a data security strategy is to make sure you have both kinds of protection in place.
For the average homeowner there are many free options to choose from but these are poor options for a business which needs to have a well thought out anti-virus and anti-malware strategy in place.