to differ / to vary / to disagree

rumor; gossip

fact; truth; reality / (as a) a matter of fact, actually, the fact (of the matter)

damage caused by rumors; specifically, reputational damage due to improper news report about an unrelated incident or resulting in economic loss

(as a) matter of fact; actually; in reality; de facto

in view of the facts

groundless; entirely contrary to fact

fact-finding

to falsify a fact

mistake of fact