Acronym

===Redundant acronyms and RAS syndrome===
{{Main|RAS syndrome}}
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Rebranding can lead to [[RAS syndrome|redundant acronym syndrome]], as when [[Trustee Savings Bank]] became TSB Bank, or when [[Railway Express Agency]] became REA Express. A few [[high-tech]] companies have taken the redundant acronym to the extreme: for example, ISM Information Systems Management Corp. and SHL Systemhouse Ltd. Examples in entertainment include the television shows ''[[CSI: Crime Scene Investigation]]'' and ''[[NCIS (TV series)|Navy: NCIS]]'' ("Navy" was dropped in the second season), where the redundancy was likely designed to educate new viewers as to what the initials stood for. The same reasoning was in evidence when the [[Royal Bank of Canada]]'s Canadian operations rebranded to RBC Royal Bank, or when [[Bank of Montreal]] rebranded their retail banking subsidiary BMO Bank of Montreal.

Another common example is "[[random-access memory|RAM]] memory", which is redundant because "RAM" ("random-access memory") includes the initial of the word "memory". "PIN" stands for "personal identification number", obviating the second word in "[[Personal identification number|PIN]] number"; in this case its retention may be motivated to avoid ambiguity with the homophonous word "pin". Other examples include "[[automated teller machine|ATM]] machine", "[[European American Bank|EAB]] bank", "[[HIV]] virus", Microsoft's [[Windows NT|NT]] Technology, and the formerly redundant "[[SAT]] test", now simply "SAT Reasoning Test"). [[Spike (TV network)|TNN]] (The Nashville/National Network) also renamed itself "The New TNN" for a brief interlude.