(As it WAS yesterday's puzzle, nobody could possibly object to your post, Linda.)
I missed out on 5 common words in that puzzle, but got all the ones you missed, LL. One of the ones I didn't get was obtuse - says it all really.
Maybe bento is not really common. Food words are one of the categories that might be over-represented in the common word list, being one of my favourite topics. But it is fairly common here to have a bento box for lunch. In fact, Japanese food in general seems to have become a very mainstream fast food option - there seems to be a sushi bar in every shopping street or food mall. Is this not so in the UK?