HSK 7-9
差错
chācuò名
mistake; slip-up; fault; error; accident; mishap
核对两遍可以减少差错。
Hé duì liǎng biàn kě yǐ jiǎn shǎo chā cuò.
Checking twice can reduce mistakes.
Say it
Hold the button, say it, then let go.
Other HSK words sharing a character
Also free:
Appears across levels (7-9) in the HSK 3.0 word list.