Only official Government sites can use that domain. It's so users know it is genuine.
top-level domains
.com , .org , .edu , .gov
Yes
.Gov tld domains cannot be purchased by ordinary organizations or person - only people from the government are allowed to operate these domains, I'm not sure but i think .gov has more importance in search results over .com such as Google.
All of these are domains name: .edu, .gov, .com and .org.
.gov, .org, .sch.uk
The most reliable domains are typically .gov and .edu. The .gov domain is used by government entities, ensuring authoritative and official information, while .edu is reserved for accredited educational institutions, reflecting credible academic resources. In contrast, domains like .com, .net, .org, and .UK can be used by anyone and may vary in reliability depending on the specific website and its purpose.
government
government
To get a backlink from .edu and .gov domains is a difficult task, the easiest way i recommend that you can gain such backlinks is by taking part in projects run by such .edu domains. By projects i mean most .edu domains are owned by Universitys if you some how contribute to projects that they are undertaking you will be able to place a link to your website from your profile page.
commercial websites base their information around selling their product
A Government Owned Vehicle (GOV), in contrast to a Personal Owned Vehicle (POV).