Regeneration

Summary
Regeneration (also known as healing factor) is a term given when a particular character can heal from wounds at an accelerated rate, even regenerating from wounds that would be lethal to normal humans. Regeneration has different levels.

Low levels of regeneration are essentially just faster natural healing, so a wound that could take weeks to heal would take days, hours, or even seconds. More advanced forms of regeneration can regrow lost limbs, organs, going all the way up to regenerating from decapitation, being blown to pieces or vaporized, and even complete physical destruction.

Types
Low: Faster healing ability for normal wounds. Mid-Low: Able to heal wounds that would normally leave large scars. High-Low: Able to regenerate some severed body parts like fingers, arms, legs. Low-Mid: ''Able to regenerate limbs/fatal wounds. Still die from decapitation.'' Mid: Able to regenerate from decapitation. High-Mid: Able to regenerate from being blown into pieces. Low-High: Able to regenerate from a puddle/drop of blood, or a small piece of your body. Mid-High: Able to regenerate from being vaporized/dust. High: Able to regenerate from a single molecule/atom/particle. Low-Godly: Able to regenerate as long as your disembodied consciousness exists/regenerate from other realms. Mid-Godly: Able to regenerate from nothing. High-Godly: Able to regenerate even if your existence is erased and the reality you are within is destroyed.
 * Example: Dipper Pines (Gravity Falls), many Warcraft including Illidan Stormrage
 * Example: Zhao Yun (Koei), Ike (Fire Emblem)
 * Example: Deadpool (Marvel Extended Universe)
 * Example: Wolverine (Marvel Comics), Freddy Krueger (Nightmare on Elm Street)
 * Examples: Piccolo and other Namekians (Dragon Ball), Sakura Matou (Fate/Stay Night)
 * Examples: Dio Brando (JoJo's Bizarre Adventure), Ryūko Matoi (Kill la Kill)
 * Examples: Cell (Dragon Ball)
 * Examples: Hulk (Marvel Comics), Deadpool (Marvel Comics)
 * Examples: Doctor Manhattan (DC Comics), Jackie Estacado (Image Comics)
 * Examples: Spawn (Image Comics), The Chosen One (Animator vs Animated)
 * Examples: Frisk (Undertale)
 * Examples: Swamp Thing (DC Comics), Orochi (Koei)