Answer:
Sites are filtered based on words or phrases; sites are blocked based on content
Step-by-step explanation:
Filtering:- this job is done by antivirus which is installed on a desktop or laptop or workstation. Filtering works on word phases. Moreover in the digital world antivirus automatically cross the internet and make sure it filters website content and words, not show to end-users.
Blocking:- antivirus which is installed on a desktop or laptop or workstation check the website whether any harmful active object is downloaded such Trojan virus and make sure the end-users are blocked not access the website. moreover it safer to end-user where his or her desktop or laptop or workstation is not affected by the virus.