Answer: redundancy

AnswerCrossword Clue
REDUNDANCYOverabundance
redundancyThe inclusion of extra components that are not strictly necessary to functioning, in case of failure in other components
redundancyThe use of words or data that could be omitted without loss of meaning or function; repetition or superfluity of information
redundancyThe state of being no longer needed or useful
redundancyThe state of being no longer employed because there is no more work available
redundancythe state of being redundant also REDUNDANCE