in my Japanese class, we were saying what we bought last weekend. I couldn't think of anything easy to say, so my American classmate said 'did you buy groceries?'. I said I did, but we don't call it 'groceries'. I then realised we don't seem to have a word for it in Britain. I call it 'food shopping' or 'supermarket shopping', as a noun, not an activity. Is there a word for it? Am I being stupid?