Kekkei Genkai refers to unique abilities or techniques in the Naruto universe that are inherited genetically. These abilities often combine two or more basic elemental natures, allowing users to perform powerful jutsu that others cannot. Examples include Wood Release and Ice Release, which showcase the versatility and strength of these inherited traits. Individuals who possess Kekkei Genkai are often part of specific clans, such as the Uchiha or Hyuuga. These clans have distinct abilities passed down through generations, making them formidable in battle. The rarity of Kekkei Genkai adds to their significance within the Naruto storyline.