* Trust: This is the most direct and common abstract noun related to confiding. It focuses on the act of placing faith in another person.
* Confidence: This implies a sense of security and openness when sharing secrets or vulnerabilities.
* Disclosure: This is a more formal term that focuses on the act of revealing information, but doesn't necessarily imply trust or intimacy.
* Sharing: This is a broader term, emphasizing the act of communicating something with another person.
* Intimacy: This implies a deep connection and closeness with the person you're confiding in.
The best choice will depend on the specific context and nuance you want to convey.