xiào​yòng

effectiveness

效用 xiào​yòng
effectiveness noun
the state or quality of being useful or effective

This new tool is highly useful for wilderness survival.

utility noun
the total satisfaction received from consuming a good or service in economics

Diminishing marginal utility is a fundamental law of economics.

Frequency

Movie subtitles
0.240 per million appears in 0% of films
Written text
3.40 per million

Sources

Definitions
CC-CEDICT