To place confidence in someone or something.

किसी पर भरोसा करना

English Usage: She is trusting in her friend's ability to solve the problem.

Hindi Usage: वह अपने मित्र की समस्या हल करने की क्षमता पर भरोसा कर रही है।

The quality of being trusting; full of trust.

विश्वासपूर्णता

English Usage: Her trustingness towards others often led her to disappointment.

Hindi Usage: दूसरों के प्रति उसकी विश्वासपूर्णता अक्सर उसे निराश करती थी।