Physical
Any type of cut, gash, or laceration
Slashing - Longsword, Axe, Dagger, Etc
Hot. Hurt.
Fire: Magical or naturally accruing
Death, decay, rotting, and corruption
Necrotic: Spells like Inflict Wounds and Vampiric Touch, etc
Can also be caused by certain wounds, diseases, etc
The damage received is halved
Resistant
Can't be stacked
Can obtain via potions, spells, feats, class, or naturally
EX: Tieflings Evolution
Typically leaves a hole in the body
Piercing: Arrows, Spears, Etc
Pain leading to potential numbness
Cold: Magical or naturally accruing
Divine Power
Radiant: Spells like Sacred Flame and Moonbeam
No damage from that type
Immune
Doesn't apply to dual damage/conditions
Can obtain via potions, spells, feats, class, or naturally
EX: Invulnerability Spell & Elven Heritage
Smacked Down
Bludgeoning: club, a quarterstaff, falling on your face, Etc
High Voltage
Lightning: Magical or naturally accruing
Massive damage of the mind
Psychic: Spells like Vicious Mockery, Crown of Madness
Also can be inflicted by nonmagical verbal cruelty
Damage is doubled
Vulnerability/Weakness
EX: Elemental
Substance that is “ingested” and causes harm to the body
Poison/Venom: Can be magical, such as Poison Spray or Chemical
Percussive noise that is loud enough to cause damage
Thunder: Magical or naturally accruing
Raw magical energy
Force: Spells like Magic Missile and Eldritch Blast
An excess of H+ ions in a solution. This causes intense burning and stinging
Acid: Can be magical or Chemical