The capacity to do work.
The external actions and influences resulting from an entity’s internal nature (ousia) and by which it is made manifest, as opposed to that internal nature itself; the aspect of an entity that can affect the wider world and be apprehended by other beings.
An intangible, modifiable force (often characterized as either 'positive' or 'negative') believed in some New Age religions to emanate from a person, place or thing and which is (or can be) preserved and transferred in human interactions; shared mood or group habit; a vibe, a feeling, an impression. (Compare aura.)
A measure of how many actions a player or unit can take; in the fantasy genre often called magic points or mana.
A quantity that denotes the ability to do work and is measured in a unit dimensioned in mass × distance²/time² (ML²/T²) or the equivalent.
The impetus behind all motion and all activity.
One of the four humors making up the body in ancient and mediaeval medicine; said to be cold and moist, and often identified with mucus.
Calmness of temperament, composure; also seen negatively, sluggishness, indifference.
Viscid mucus produced by the body, later especially mucus expelled from the bronchial passages by coughing.
A watery distillation, especially one obtained from plant matter; an aqueous solution.