For example, Google has registered: Google.net, Google.info, Google.co, Google.cc, Googel.com, Gogole.com and many many more. They all redirect users to the main: Google.com domain name, but they bought all of them because they didn’t want other people to run phishing and scamming websites and tricking people into thinking they are actually on Google when in fact they were getting scammed and hacked.
Fortunately, the process of researching keywords for your domain name is the same as finding effective keywords for other uses. You can use tools like Google Keyword Planner and KWFinder to search for terms that have both a high search volume and (ideally) low competition. Just remember that in this case, you’re looking for a keyword that represents your website and content as a whole. How to Make a Website in 10 mins - Simple & Easy