zhì​xìn

believe

置信 zhì​xìn
believe idiom
to believe or trust what someone claims, typically used in negative contexts

This news is hard to believe.

confidence verb
relating to statistical confidence levels or intervals

We need to calculate the confidence interval for this sample.

Frequency

Movie subtitles
1.40 per million appears in 1% of films
Written text
2.04 per million

Sources

Definitions
CC-CEDICT