conjunction
Used to change the topic or introduce a new, often less important, subject in conversation.
ところで、明日の会議は何時からですか。
By the way, what time is tomorrow's meeting?
particle, conjunction
even if; no matter (what, where, how, etc.)
Follows the plain past form of a verb to express that even if that action is taken, the result will be the same or it won't matter. Often used in patterns like たところで.
今さら謝ったところで、もう遅い。
Even if you apologize now, it's too late.
急いだところで、電車には間に合わないだろう。
No matter how much you hurry, you probably won't catch the train.