I am a newbie to the linux world and while researching on best distro for linux to use, I came to know that we can install and switch DEs. For eg: If I use Ubuntu (unity) and say if I install lubuntu DE, gnome DE via terminal and then start using it. My question now is that, Does the above example EQUAL TO installing lubuntu or gnome manually in the first place instead of Ubuntu unity version ? Or Does it only change the appearance?
I am very much confused after searching and researching on this matter.