redundancy
Pronunciation:
/ɹɪˈdʌnd(ə)nsi//ɹə-/noun
Definitions
The state of being redundant
A superfluity; something redundant or excessive; a needless repetition in language
Duplication of components or circuits to provide survival of the total system in case of failure of single components.
Duplication of parts of a message to guard against transmission errors.