Cocoa: NSUInteger and UInt32 both defined as 32 bit unsigned integer. So why the warnings?

Cocoa: NSUInteger and UInt32 both defined as 32 bit unsigned integer. So
why the warnings?

References

Reference NO 1

http://stackoverflow.com/questions/15198264/cocoa-nsuinteger-and-uint32-both-defined-as-32-bit-unsigned-integer-so-why-the

Reference NO 2

http://stackoverflow.com/questions/16918826/objective-c-implicit-conversion-loses-integer-precision-nsuinteger-aka-unsig

Reference NO 3

http://stackoverflow.com/tags/nsuinteger/hot

Reference NO 4

http://stackoverflow.com/questions/6360574/nsnotfound-nsinteger-nsuinteger-and-nsrange-location

Reference NO 5

http://stackoverflow.com/questions/8809515/nsuinteger-to-int

Reference NO 6

http://www.cocoabuilder.com/archive/cocoa/203649-nsuinteger-question.html

Reference NO 7

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Reference NO 8

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