Definitions: (noun) Energy is the ability to do work: move, give off heat, give off light, etc.
Examples: (noun) This problem has taken up most of her time and energy for over a year. (noun) Higher electricity prices should help promote energy efficiency. (noun) Unlike coal or oil, atomic energy production creates little air pollution.
Synonyms: nouns: activity, vitality, spirit.
Academic Word List Sublist and Group: 5 A