function
The basic explanation is the influence and function on things, and the influence on things.
Derivative interpretation includes actions, efforts, intentions and spells.
In engineering terms, function is a set of forces exerted on a structure or the cause of structural deformation.
Pharmacologically, action is the initial reaction caused by drugs.
Use: refers to the applicable aspects and scope.
Efficacy: refers to the expected result or effect obtained by an action.
Synonyms: utility, function