Interesting Facts

Etymology and usage
The word fact derives from the Latin Factum, and was first used in English with the same meaning: "a thing done or performed", a use that is now obsolete. The common usage of, "something that has really occurred or is the case", dates from the middle of the sixteenth century.
Fact is sometimes used synonymously with truth or reality, as distinguishable from conclusions or opinions. This use is found in such phrases as, It is a fact that the cup is red or Matter of fact, and "... not history, nor fact, but imagination."
Fact also indicates a matter under discussion deemed to be true or correct, such as to emphasize a point or prove a disputed issue; (e.g., "... the fact of the matter is ...").