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Rumor
A rumor or rumour is often viewed as “an unverified account or explanation of events circulating from person to person and pertaining to an object, event, or issue in public concern” Rumor is a concept that lacks a particular definition in the social sciences. But most theories agree that rumor involves some kind of a statement whose veracity is not quickly or ever confirmed. Rumors are also often discussed with regard to "misinformation" and "disinformation" (the former often seen as simply false and the latter seen as deliberately false, though usually from a government source given to the media or a foreign government). Rumors thus have often been viewed as particular forms of other communication concepts.
Grapevine (gossip)
To hear something through the grapevine is to learn of something informally and unofficially by means of gossip and rumor.
The usual implication is that the information was passed person to person by word of mouth, perhaps in a confidential manner among friends or colleagues. It can also imply an overheard conversation or anonymous sources of information. For instance "I heard through the grapevine that Brad was getting fired."
Dictaphone
Dictaphone was an American company, a producer of dictation machines—sound recording devices most commonly used to recordspeech for later playback or to be typed into print. The name "Dictaphone" is a trademark, but in some places it has also become a common way to refer to all such devices, and is used as a genericized trademark.
News Conference
In a news conference, one or more speakers may make a statement, which may be followed by questions from reporters. Sometimes only questioning occurs; sometimes there is a statement with no questions permitted.
Television stations and networks especially value news conferences: because today's TV news programs air for hours at a time, or even continuously, assignment editors have a steady appetite for ever-larger quantities of footage.
News conferences are often held by politicians (such as the President of the United States); by sports teams; by celebrities or film studios; by commercial organizations to promote products; by attorneys to promote lawsuits; and by almost anyone who finds benefit in the free publicity afforded by media coverage. Some people, including many police chiefs, hold news conferences reluctantly in order to avoid dealing with reporters individually.
A news conference is often announced by sending an advisory or news release to assignment editors, preferably well in advance. Sometimes they are held spontaneously when several reporters gather around a newsmaker.
Public address
A public address system (PA system) is an electronic sound amplification and distribution system with a microphone, amplifierand loudspeakers, used to reinforce a sound source, e.g., A Person giving a speech, a DJ playing prerecorded and distributing the sound throughout a venue or building.
News Conference
A news conference or press conference is a media event in which newsmakers invite journalists to hear them speak and, most often, ask questions. A joint press conference instead is held between two or more talking sides.
Teleconference
A teleconference or teleseminar is the live exchange and mass articulation of information among several persons and machines remote from one another but linked by a telecommunications system. Terms such as audio conferencing, telephone conferencing and phone conferencing are also sometimes used to refer to teleconferencing.
The telecommunications system may support the teleconference by providing one or more of the following: audio, video, and/or data services by one or more means, such as telephone, computer, telegraph, teletypewriter, radio, and television.