The word Rumor is used as a synonym for Grapevine. But technically there is an
important differences between them.
Rumor is a grapevine information that is communicated without secure standards or
evidence being present. It is unverified and untrue part of the grapevine.
It could be by chance be correct, but generally it is incorrect; thus it is presumed to
be undesirable.
Rumor is primarily a result of two factors ‘’ Interest’’ and ‘’Ambiguity’’ both present
in a situation.
Rumor is created when a subject is not important or has no interest to a
person.