There are quite a few keywords, and many are detailed beneath the item which contains them, both in the skill-tree and on legendary items.

Here is a list lifted from https://mobalytics.gg/blog/diablo-4/status-effects/

Barrier Barriers create a temporary layer of shield that absorbs damage from all sources.

Berserking Grants 25% increased damage and 30% increased Movement Speed.

Bleeding/Poison Targets that are Bleeding or Poisoned are dealt damage over time based on percentage weapon damage.

Note that: Each type of Bleed or Poison applied stacks with itself Each type of Bleed or Poison snapshots your damage buffs on the application. Each stack of each Bleed or Poison ticks down and expires independently. Blood Orbs Heals you for 15% of your Maximum Life when picked up.

Burning Targets that are Burning are dealt Fire damage over a period of time (duration defined by its source).

Chill + Frozen Chilled targets have reduced Movement Speed (different things apply different amounts of Chill, represented as a %) if you repeatedly Chill a target, you will Freeze them. When Frozen, targets cannot attack or move.

Close <-> Distant Close refers to targets that are within melee range while Distant refers to targets that are outside of it.

Crackling Energy Crackling Energy is spawned by abilities like the Sorcerer’s Chained Lightning. When picked up, periodic damage is dealt to nearby enemies.

Crowd Control A target that is Crowd-Controlled is affected by Chill, Daze, Fear, Freeze, Immobilize, Knockback, Knockdown, Taunt, Tether, Stun, and/or Slow.

Daze Daze prevents its target from attacking or using skills but allows them to still move.

Fear Feared targets are forced to run away and cannot otherwise move or take action (it can be removed by Immune/Unstoppable effects)

Fortify Fortify is a stacking shield that causes its target to take 10% reduced damage when Foritifed. Fortified refers to when your Fortify’s shield is greater than your current life.

Example: If you have 50 Life and 100 Fortify and you take 10 damage, your Fortify will absorb 1 of that damage (10%) and then you lose 9 health, so you’ll have 49 Life and 99 Fortify.

Healthy Refers to the threshold of having 80% or more Life.

Hex Hexed targets are transformed into harmless creatures for a short time. Their passive effects are nullified and they cannot attack nor move.

Immune Immune prevents all damage and removes/prevents all negative effects.

Knockback Knockback forcibly moves away in the opposite direction from where the target hit originally was.

Immobilize Immobilized targets cannot move (can be removed by Immune/Unstoppable effects).

Injured/Healthy Refers to the threshold of having less than 35% of Life while Healthy refers to having 80% or more Life.

Lucky Hit Activates Lucky Hit effects when a Lucky Hit is landed. It’s fixed on the ability and only improves the base% of the ability.

Overpower Overpowering deals bonus damage based on the sum of your current Life and Fortified Life. It applies to every hit for both AoE and multi-hit abilities. It doesn’t scale with other stats.

Slow Slow causes its target to have reduced movement speed (based on $ defined by its source).

Stealth The Stealth effect prevents its target from being directly targeted by enemies but they can still be hit (such as by an AoE or projectile). Upon taking damage or using an attack, Stealth will be instantly removed.

Stun Stun causes its target to be unable to move, use skills, or attack.

Taunt Taunt forces a target to switch aggro to target the caster.

Tether Tether prevents its target from moving out of its radius. It can be removed by Immune/Unstoppable or if the Tethered target dies.

Thorns A target with Thorns deals damage to its attacks when hit by direct attacks (does not apply to DoTs).

Note: It does not scale off of weapon damage, but rather, it scales off your other stats. (Damage to close, damage to far, damage to CC’d, etc). Protection Shrines and Dodge prevents Thorns from proccing. They cannot Crit and they do not count as direct damage.

Unstoppable Unstoppable prevents and removes all control-impairing effects (such as Daze, Slow, Freeze, etc).

Vulnerable Vulnerable targets take 20% increased damage (can be increased by gear).