Compare Columns In Two Workbooks & Update One

I have two workbooks, one is reference (W1), other is the one that needs update(W2). I need macro that compares reference column in W1 with targeting column in W2, then for match cells update two or more cells in same with new data from reference cells in W1, and for end to report what data in W1 in reference column wasnt find in W2. I tend to use macro in reference book W1, and to update book W2 without opening, so I need this macro to work just with file manager from excel . No need for user modul for targeting columns, they are static in both woorkbooks. In practise in W1 is invoice prices with part numbers, at other one is the same, but with prices for distribution (with formulas), I want ti automaticly refresh part numbers with new prices, an to have report what part numbers are not in price list (W2)