Energy (translation to "ene/enaji/enerugi") or Energies are the main principle sources that are contain within any living/spiritual beings or things.
Energy is basically is an indirectly observed quantity that is often understood as the ability of a physical system to do work on other physical systems. since energy can take on many forms, physical energy and spiritual energy are mix into one energy source that is known as Chakra. Energies are used to form many types of techniques known as Jutsu, (Viz meaning for "the ninja style skills/techniques") and Tekuni (Viz meaning for "the reaper style skills/techniques"). There are five different compnent of energy to wield listed below:
Physcial Energy (translating to "shintai enerugi") is energy that can be collected from the body's cells and can be increased through training, stimulants, and exercise.
Spiritual Energy (translating to "seishin enerugi") is energy that can be derived from the mind's consciousness (i.e. the soul) and can be increased through studying, meditation, and experience.
Natural Energy (translating to "shizen enerugi") is energy that can be gathered from the atmosphere and terrain.
Creational Energy (translating to "kenzen enerugi") is energy that can be manifested from the surrounding of used energies through recontruction.
Motional Energy (translating to "benden enerugi") is energy that can be derived from the envirnmont throughout the five main elemental chakra.