Malware:Malware is an umbrella term for any software designed to harm or exploit computers and their users. It includes viruses, worms, ransomware, spyware, and other malicious programs.
Antivirus Software: Antivirus software is designed to detect and remove viruses and other malware from computer systems. It scans files and programs for known patterns of malicious code and takes action to neutralize threats.
Firewall: A firewall is a network security device that monitors incoming and outgoing network traffic based on predetermined security rules. It acts as a barrier between internal networks (such as your home network) and external networks (such as the internet), protecting against unauthorized access and potential threats.