Words indicating facts or truths:
* Actually
* Indeed
* In fact
* Truly
* Certainly
* Evidently
* Clearly
* Obviously
* Undeniably
* Specifically
* Precisely
* For example
* For instance
* To illustrate
* Such as
Words indicating specific details or information:
* The (often used before a specific noun)
* This
* That
* These
* Those
* Which
* Who
* What
* When
* Where
* Why
* How
* Number (e.g., "The number of...")
* Date
* Time
* Place
* Reason
Words introducing definitions:
* Is
* Means
* Refers to
* Represents
* Consists of
Words indicating evidence or support:
* According to
* Based on
* As shown by
* Because
* Since
* Therefore
* Consequently
* Due to
It's important to note that these are just general clues, and the context of the sentence is crucial for determining whether a noun is a fact noun.