Help comparing two columns of data

I have two columns of data, a list of websites, and I need a way to sort out the duplicates between the two columns. So if a website is listed in column A and column B, then I need a way to remove it from B but keep it in A. Any suggestions for how to accomplish this?

Try to Copy column B to the bottom of column A (so there's only one column) and do a Remove Duplicates in the Data tab under Data Tools

Originally Posted by Speshul

Try to Copy column B to the bottom of column A (so there's only one column) and do a Remove Duplicates in the Data tab under Data Tools

That's what I thought of at first but when you do that it still leaves one instance of whatever was a duplicate in the column, thereby leaving me where i started.