Fact (noun)

1. Something known to have occurred or to exist.
2. Something demonstrated to be true.
3. An occurrence, circumstance, or state of affairs.
4. An item of information or data.

Origin:

Middle english, from latin factum, from neuter of factus, past participle of facere to make, do.

Examples:

1. It is a fact that the earth orbits the sun.
2. The fact that he was absent from the meeting is surprising.
3. The facts of the case are still being investigated.
4. The company released the fact sheet to the public.
5. The fact of the matter is that she is not interested.