We briefly discussed the topic of brand vs. related name here. Personally, I would decide based on the project and the resources at hand. Namely;
I believe memorability is the most important factor. Because of this, if I find a reasonably priced generic domain, it would definitely be my first choice.
When you find an address like xyzworld.com, don’t assume it is highly memorable. Because there are dozens of other names of the same quality, such as xyzhome, xyzhouse, xyzbasket, xyz.co, etc. On top of that, when you add generic names like xyz.com, .net, .org, .gen.tr, you will struggle quite a bit in the competition.
Some sectors require professionalism. Since companies with brand domains have become quite popular in recent years, they project a more professional image. When choosing a brand, you do not have the limitation of it having to be meaningful; your chances of finding a memorable domain with a .com extension are very high. However, etching a brand domain into people’s minds requires a lot of advertising and online visibility, which demands money and effort.
On the other hand, finding a name that explains the purpose of the project can also be very advantageous. If you are venturing into a business that has not been done before, or is not widely known, these types of names are more suitable. For example; you are going to run a car rental business, but you will deliver the car to the customer’s address. Names that describe what you do, like mycaratmydoor, sendrentalcar, etc., could make much more sense.