Confidence

信任

shinnin

(expression or feeling of certainty)

信用

shin'yō

(expression or feeling of certainty)

信頼

shinrai

(expression or feeling of certainty)

打ち明け話

uchiakebanashi

(information held in secret)

確信

kakushin

(self-assurance)

秘密

himitsu

(information held in secret)

自信

jishin

(self-assurance)