How does the scscientific use of the word efficiency differ from the everyday use of the word?

In scientific contexts, "efficiency" refers to the ratio of useful output to total input, often expressed as a percentage, and quantifies how well a system converts resources into desired outcomes. In everyday language, however, "efficiency" can simply imply speed or convenience, without a precise measurement of performance relative to input. This distinction means that in science, efficiency is a more rigorous and calculable concept, while in daily conversation it may be more subjective and qualitative.