General:
* Telling: This is the most direct noun form of the verb "tell." It can be used in contexts like "the telling of a story" or "the telling detail."
* Account: This implies a detailed description or narration of an event.
* Narrative: This refers to a story or a sequence of events.
* Report: This implies a formal and factual account.
Specific:
* Disclosure: This suggests revealing something previously hidden or secret.
* Revelation: This implies a sudden and surprising disclosure of important information.
* Confession: This refers to admitting guilt or wrongdoing.
* Instruction: This implies giving directions or guidance.
* Warning: This refers to a statement of possible danger or harm.
* Promise: This refers to a statement of intention to do something.
The best noun for "tell" will depend on the specific context you are using it in.