Well, I'd say efficiency is a characteristic. "Characteristic" in and of itself is rather vague though. If you speak of characterization or personality traits, then I'd say effectiveness doesn't really do the job. It is a characteristic in the sense that it helps define a character. For me however, it's not a very "effective" description. Potency might be better. Of course, it's subjective.
Effectiveness is typically considered a measure of how well a goal is achieved. It is an attribute or quality of a process, action, or system, rather than a characteristic. Characteristics are more intrinsic traits or features that define an object or entity.
Cynical
MOE
Effectiveness is a noun.
effectiveness
effectiveness
Characteristic. Characteristic. Characteristic. Characteristic.
No, using two methods of birth control increases effectiveness or leaves effectiveness unchanged.
Determining the effectiveness of sugar as preservatives
Leadership effectiveness is best assessed
Effectiveness of television advertisement on teenage roumd the world?
Institute for State Effectiveness was created in 2005.
Crystallinity is a characteristic of minerals, but not mineraloids.