effectiveness as in power to be effective

• "the quality of being able to bring about an effect"

Synonyms

• effectivitypower to be effective
• effectualnesspower to be effective
• effectualitypower to be effective

effectiveness as in capacity to produce strong physiological or chemical effects

• "the toxin's potency"
• "the strength of the drinks"

Synonyms

• potencythe power or right to give orders or make decisions; capacity to produce strong physiological or chemical effects; the inherent capacity for coming into being ; the state of being potent
• strengththe property of being physically or mentally strong; capability in terms of personnel and materiel that affect the capacity to fight a war; physical energy or intensity; an asset of special worth or utility; the power to induce the taking of a course of action or the embracing of a point of view by means of argument or entreaty; the amount of energy transmitted (as by acoustic or electromagnetic radiation); capacity to produce strong physiological or chemical effects; the condition of financial success; permanence by virtue of the power to resist stress or force