Vocabulary : Efficacity to Effigiation
Efficacity : Efficacy.Efficacy : Power to produce effects; operation or energy of an agent or force; production of the effect intended; as, the efficacy of medicine in counteracting disease; the efficacy of prayer.
Efficience : Alt. of Efficiency
Efficiency : The quality of being efficient or producing an effect or effects; efficient power; effectual agency. ;; The ratio of useful work to energy expended.
Efficient : Causing effects; producing results; that makes the effect to be what it is; actively operative; not inactive, slack, or incapable; characterized by energetic and useful activity; as, an efficient officer, power. ;; An efficient cause; a prime mover.
