Is 'Corner Shop' a racist word?

For a Pakistani shop in England which isnt always on the corner? Someone told me it is.
And am I racist if I rather go to supermarket cos its cheaper because I am unemployed? I was told by my son I shop at corner shops because I am racist. (Its not the case, I always bought my alcohol there)?
Update: A 'corner shop' isnt always on the corner!
Update 2: well Cornershop then!
Update 3: I was told that because I DONT shop at corner shops I am racist. Its just that some things cost 1/2 price at Supermarket.
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