effort

n. physical or mental exertion, labor; attempt; something accomplished through hard work; organized operation

This article is about the physical quantity: for other uses of the word "energy", see Energy (disambiguation).* In physics and other sciences, energy (from the Greek ενεργός, energos, "active, working") is a scalar physical quantity that is a property of objects and systems of objects which is conserved by nature. Several different forms, such as kinetic, potential, thermal, electromagnetic, chemical, nuclear, and mass have been defined to explain all known natural phenomena.
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Energy /en·er·gy/ power which may be translated into motion, overcoming resistance, or effecting physical change; the ability to do work. Symbol E. [more]Effort - Community and Resources

Noun
1. earnest and conscientious activity intended to do or accomplish something; "made an effort to cover all the reading material"; "wished him luck in his endeavor"; "she gave it a good try"
(synonym) attempt, endeavor, endeavour, try
(hypernym) activity
(hyponym) batting
2. use of physical or mental energy; hard work; "he got an A for effort"; "they managed only with great exertion"
(synonym) elbow grease, exertion, travail, sweat
(hypernym) labor, labour, toil
(hyponym) struggle
3. a series of actions advancing a principle or tending toward a particular end; "he supported populist campaigns"; "they worked in the cause of world peace"; "the team was ready for a drive toward the pennant"; "the movement to end slavery"; "contributed to the war effort"
(synonym) campaign, cause, crusade, drive, movement
(hypernym) venture
(hyponym) advertising campaign, ad campaign, ad blitz
4. a notable achievement; "he performed a great deed"; "the book was her finest effort"
(synonym) deed, feat, exploit
(hypernym) accomplishment, achievement
(hyponym) acquiring, getting

n. effort, attempt; stress, strain; exertion, endeavor; spirt, pain, stroke