Dominion is the equivalent to domination mode found in most modern first person shooters. (elder-geek.com)
Check out 9 minutes of Domination mode in Call of Duty Black Ops 4 multiplayer gameplay on the map Contraband (player.fm)
These modes include Sumo — where the aim is to push your opponent out of the arena, Classic Brawl (team deathmatch), and a Colour Domination mode (akin to this year's summer blockbuster Splatoon 2). (switchplayer.net)