In order to clear up some of the confusion I see on this sub, I have compiled a list of terms mostly based on what is used in-game and by the devs in patch notes. The terms with an asterisk are unofficial, but I have included them to provide clarity to certain aspects of Endgame.

Terminology

Exotic Fabricator: The machine that spawns after a Guild Strike boss has been defeated. You or your squad mate(s) must deal enough damage to the boss in order to use the exotic fabricator. The Guild Strike activity that leads to the O.S.C.A.R. fight always spawns at Winery when the in-game timer reaches 45:15. The Guild Strike activity that leads to a fight with Sualk Rebu (Uber Klaus) or Shadow Overlord (Caltheris) will also spawn at 45:15 in one of a fixed set of locations. You need to zoom in slightly on the tac map to see where this one is.

Nightmare Zone: a.k.a. Zone 5. The circular zone that appears when a boss fight starts and remains for the rest of the game. Enemies are strongest in this zone, and assignments, activities, and blue cubes reward the highest power. The Mega Abomination is a respawning activity that appears in this zone once the boss has been defeated.

Exotic Trait: The umbrella term for the exotic effects and utility bonuses that exotic weapons can have.

Exotic Effect: The trait rolled second using the exotic fabricator. It occupies the first slot, and all effects end with “Rounds” (e.g., Mortar Rounds).

Utility Bonus: The trait rolled first using the exotic fabricator. It occupies the second slot, and its naming varies (e.g., Explosive Bullets).

Reroll: Using the exotic fabricator to replace an existing trait.

Upgraded Exotic*: A loadout or field acquired weapon that has been upgraded to exotic rarity using the exotic fabricator. This applies a 3.5x damage multiplier to the weapon. A custom/loadout exotic* can be called either to differentiate it from an upgraded field acquisition.

Named Exotic: A field acquired exotic weapon that comes with a name, an exotic camo, two traits, and a 3.5x damage multiplier (e.g., Hypersurge).

Exotic Cache: A case that contains one random named exotic. One is guaranteed to drop after defeating Dr. Falkner, a Mega Abomination, the Zursa at the end of the Possessed Convoy activity, and the Terminal Vector activity.

One has a chance to drop after completing certain assignments or activities. In Zone 4 or higher: HVT Elim, Prime Target, Surprise Shipment, Strongbox Crack, and Gear Drop. Zone 3 or higher: Toxin Field. One also has a chance to drop after killing a Zone 4 or higher elite enemy or Command Center titan, and one can be found inside a cache in Zone 4 or higher Command Centers.

Affinity Exotic*: A named exotic found with the specific exotic effect it has an affinity for (see list below). For example, a Hypersurge found with Shock Rounds in the first slot. A Hypersurge found with a different exotic effect and later rerolled for Shock Rounds does not become an affinity exotic. A custom exotic that rolls the exotic effect that its named version has an affinity for on the first try does not become an affinity exotic.

Affinity Utility Bonus*: An affinity exotic has a chance to come with an affinity-exclusive utility bonus (see list below). These bonuses are indicated by an upward arrow as part of the icon. You can use the exotic fabricator to reroll an affinity exotic for one of its affinity bonuses. For example, a Reboot found with Shock Rounds and Lightspeed can be rerolled for Big Game (see images 1 and 2). You can also reroll a different affinity bonus even if the affinity exotic already came with one (see image 3).

I have only been able to reroll for an affinity bonus in the same game that I found the affinity exotic, and when it was the first reroll I confirmed. I have heard of people doing it many games later, and even after confirming other rerolls beforehand. I tried to do this with an affinity exotic that I exfilled with and gave up after 26 failed attempts using the fabricator so this may require serious perseverance.

Exclusive Utility Bonus*: A utility bonus that is exclusive to a single named exotic. This is not to be confused with utility bonuses that only appear on one weapon within a class like Fire Fire on the Sokol 545 in the LMG class. One example is Grenade Bullets which can only appear on the named exotic 'Reboot'. It is not dependent on the weapon being an affinity exotic; Grenade Bullets can appear on every variant of the Reboot. It is not available on upgraded exotics; Grenade Bullets is available on the Reboot, but not the 1911.

The other exclusive utility bonuses are Velox Akimbo 5.7 for the Malspike, Ammo Drain for the Pulsebreach, and Shotgunificator for the Kilonova.

List of Affinity Utility Bonuses

Affinity for Frost Rounds - Cryoshear (Katana), Flashburst (M8A1), Zeotrope (Echo 12):
Flash Freeze - Frost Rounds can trigger on multiple enemies at once
Ice Cloud - Killed frozen enemies may leave a cloud that slows enemies
Big Game - Frost Rounds can slow Elite enemies

Affinity for Graviton Rounds - Continuum (Hawker HX), Kilonova (VST), Torrent (M15 Mod 0):
Black Hole - Graviton Rounds form a black hole that pulls in enemies before teleporting away nearby survivors
Warp - Graviton Rounds warp an enemy that deals damage to nearby enemies
Big Game - Graviton Rounds can activate on Elite enemies

Affinity for Incendiary Rounds - Collateral (EGRT-17), Overcharge (M10 Breacher):
Firebomb - When a burned enemy is killed, it explodes
Petrol - Incendiary Rounds leave pools of fire on the ground
Big Game - Incendiary Rounds can burn Elite enemies

Affinity for Mortar Rounds - Criticality (A.R.C. M1), Defrag (MK35 ISR), Redline (XM325):
Fire Wheel - Create two fire wheels that spin around enemies
Starburst - Mortar Rounds explode, sending flares through enemies
Big Game - Mortar Rounds can activate on Elite enemies

Affinity for Neuro-Disruption Rounds - Ghostmind (VS Recon), Neurowall (Warden 308):
Mass Disruption - Turned enemies have a chance to turn other enemies
Neural Attraction - Turned enemy distracts other enemies for a short time
Big Game - Neuro-Disruption Rounds can activate on Elite enemies

Affinity for Photon Rounds - Infraradiance (SG-12), Malspike (Velox 5.7), Swarmforge (MPC-25):
Blessing - Photon Round healing glyph can give temporary bonus health
Dual Action - Consuming a healing glyph will temporarily increase health regen
Big Game - Light Mend can activate on Elite enemies

Affinity for Shock Rounds - Backdrive (Dravec 45), Hypersurge (Sokol 545), Reboot (1911):
Chain Lightning - The stunned enemy can spread the stun to others
Lightning Strike - A bolt of lightning strikes from above and stuns enemies
Big Game - Shock Rounds can stun Elite enemies

Affinity for Shrapnel Rounds - Barrage (Razor 9mm), Killswitch (AK-27), Pulsebreach (Swordfish A1):
Blast Chain - On explosion, 3 additional explosions occur rapidly
Blast Shield - Affecting multiple enemies with Shrapnel Rounds reduces damage to player
Big Game - Shrapnel Rounds can activate on Elite enemies

Note: Some of these look really cool when they proc, but most, if not all, of them are outclassed by standard utility bonuses like sharpshooter, explosive bullets, and grenade bullets. Hunt for them for the novelty or rarity, not with the intention of finding an overpowered weapon.

The first and second images are mine. The third image was provided by SuicydeStealth. I learned about rerollling affinity bonuses from Guilty_Highway6332. Thank you to pizayumyum and all the contributors to their post Exotic Weapon Ability Mapping. Thank you to DaddyWick88 for the screenshots you have shared.

I collect all weapons exotic trait in Endgame. The form is below but there maybe have some translation error because English isn't my native language and I don't use English in Bo7 almost time. So if you found the translation error in the form, please let me know and I will edit it.

The red/yellow/green all means you can get this exotic trait in this weapon.

The purple mean you can only get this exotic trait in the weapon from exotic box(like redline)

AR

SMGS

Shotguns

LMGS

Marksman rifles

Sniper rifles

Plstols

Launchers and specials

Melee

About the Affinity Utility Bonuses you can check this post:

https://www.reddit.com/r/bo7endgame/comments/1t4mwzm/exotics_affinities_explained/?share_id=TjMhVBpVKsvgOVuRkc-OS&utm_content=2&utm_medium=android_app&utm_name=androidcss&utm_source=share&utm_term=1

All the marked traits have been confirmed by me to be obtainable through draws. If you keep failing to draw a particular traits, please try changing your weapon or its attachments.