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which way; which direction; where
which one (esp. of two alternatives)
who
「何方」 has other readings with different meanings.
どちらへ行きますか。
Which way are you going?
どちらの色がお好みですか。
Which color do you prefer?
どちらを選んでも結果は同じだと思う。
I think the result is the same no matter which you choose.