10) Ghosting
Ghosting is when you have died and you help the people still alive to win the game. For example in sky wars when there are two people left and you use spectator mode to tell one of the players where the other one is hiding.
9) Skybasing ( This will get you banned)
Skybasing is when you build straight up into the sky and make it a sort-of mini base then stay up there. Also you knock people pff when they try to get up. This is bannable because it gives the other players a big disadvantage.
8) Bowspamming
Bowspamming is when you are in a melee fight with another player and they start shooting you repeatedly. You often die from this, or health gets lowered enough for them to kill you. This is why the automatic bow is a problem on Lucky Islands.
7) Cleaning
Cleaning is when you have just finished killing a player then another comes and kills you while you are low on health. It isn't bannable but still very annoying.
6) Trolling (This will get you banned)
An example for this is in block wars when you have taken the flag but you don't capture it, you just stand there. There are other types of trolling too.
5) Camping (This may get you banned)
Camping is when a player stays in one place for a long time so it is hard to grt past them, for example in block wars when the whole team stays near their flag so you can't get it.
4) Teaming / Cross Teaming (This will get you banned)
In solo games to avoid killing another player on purpose is bannable, and called teaming. If it is a team game and you are on different teams it is also considered teaming to have mercy on them.
3) Glitch Exploiting (This will get you banned)
Any sort of glitch or bug in the game that you use to cheat is bannable. For example the wool glitch in block wars because if you have the flag you can put the wool in your off-hand then place it under you to get over a wall.
2) Griefing / Team Griefing (This will get you banned)
Destroying your teams or another player's building is called griefing and is bannable. This is very bad in block wars with players destroying other players' blocks to put them somewhere else.
1) Hacking (This will get you banned)
Obviously hacking is number 1, when you use a program from the internet to cheat like get kill aura. If you see this you should record it and report it as soon as possible.