This chart shows the required quests to get one of 2 free Genesis Orbs

Some of this stuff might be server specific (I found this out after merging to Neno Kuni) but here are a few phrases/acronyms that get used in game that could be confusing when first heard. I will add to them as I think of them. This list will be mostly for items that I have found seem to be unique to New World, I may make another list for MMORPG shorthand, but there are so many out there already.

• C-Train
• Stands for Corruption Train, and is when a group goes around closing Corruption Portals
• This is also called running portals.
• eg: C-Train staring in Reekwater in 5 minutes
• Gen/Genesis 
• Refers to the Garden of Genesis, an expedition (dungeon)
• Note that since the Orb (think key) to enter the Genesis Expedition is costly to make a lot of players will charge for group slots (on Neno Kuni for instance it's approx 1,500 to 2,500 gold per slot.
• AH, TP, MB, Baz
• All refer to the same thing. In New World it's the "Trading Post" where players can buy and sell items to/from other players.
• AH = Auction House, TP = Trading Post, MB = Market Board, Baz = Bazaar
• OPR
• Outpost Rush this is the 20v20 PVP arena area.  
• Malv
• Generally refers to Tower of Malevolence, an elite area in Eden Grove that can be farmed for Elite Chests to increase Expertise
• Can also refer to the Boss Mob in Tower of Malevolence
• Sirens
• Refers to an Elite area in Reekwater that can be farmed for Elite Chests to increase Expertise
• WM (WaterMark), now Expertise 
• Refers to your gear score (post lvl 60)
• Once you hit level 60 your base gear score for each gear slot will be 500 out of a possible 600
• Every time you defeat an elite mob or loot an elite chest you have a chance to loot a piece of gear that has a higher score than your current Expertise level. If this happens, your expertise for that slot/weapon will become the same as the gear score of the item you looted. You have a chance for higher increases at lower gear score and as you get nearer to 600 the incremental bumps become smaller and smaller.
• eg if your current expertise score for your hand slot is 500, and you loot a glove (loot not purchase) with a gear score of 505, your expertise score for your hand slot will now be 505.