A 'raid' is a large team mission against a powerful boss.

A 'clan' is an organized group of gamers who play together regularly.

'Squad' is your regular team or group of gaming friends.

In gaming, 'gank' means to ambush an enemy with superior numbers.

In gaming, 'utility' refers to non-weapon abilities and tools that provide tactical advantages.

In gaming, a 'trade' occurs when a player kills an enemy immediately after that enemy killed their teammate.

In gaming, 'rotate' means for a team to collectively move from one area of the map to another.

Rez means to revive or resurrect a teammate.