Ability attack means is how much power will be released our hero when he took out his skill.
AFK (Away From Keyboard) is when a player in a mobile legends game leaves the game during the game. Usually other players will be upset because of the AFK player.
Airbone means that your hero will momentarily stop in the air and can not be controlled because of the effects of the opponent's skill.
Buff is the extra energy your hero gets from attacking the moster in the forest.
Bush / brush is the grass that serves as a hide hero.
Cooldown is the time that our hero needs to be able to use his skill again after a while.
Farm is an action performed by heroes to kill opponent minions or kill monsters in the jungle.
GG stands for good game which means if you have a good game dalah game.
Mana is sesutau needed by hero to be able to use his skill again, because to issue the required skill mana.
Minion is a small army that emerges from the center turrent of each team. Usually heroes will use the minion to get extra energy.
Third party reference
The monsters are the jungle watchers provided as a meal for the heroes.
Stun is a state in which heroes unleash their skill that makes other heroes unable to move for a while.
Turrent is the unique defense of a team that surrenders the hero or opponent's minion if there is no hero.
Ultimate is a supreme skill for a hero that inflicts enormous damage to the enemy.
Well that is some of the terms that should be known by mobile legends players to better communicate with his team.