a piece of information about circumstances that exist or events that have occurred; first you must collect all the facts of the case'

a statement or assertion of verified information about something that is the case or has happened; he supported his argument with an impressive array of facts'

an event known to have happened or something known to have existed; your fears have no basis in fact; how much of the story is fact and how much fiction is hard to tell'

a concept whose truth can be proved; scientific hypotheses are not facts'