Rename column if its name matches to a name in given list

Specific Domains Data
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12

No, You again misunderstood.
I don’t want to change first letter of name "mag" to "Mag", "lag" to "Lag" etc.
Please see my modified post 10 again.

At last i found good concise solution :laughing:

list=["Time", "Tmid", "T0", "t-T0", "t-to"] # rename  to "Time"
listb=["mag", "Limit", "Magnitude","OT", "magn"]
oldtonew = Dict(name=> "Time" for name in intersect(names(df), list)) 
otn=Dict(name=> "Mag" for name in intersect(names(df), listb))
merge!(oldtonew,otn)
rename!(df,oldtonew)