A number of people here, includng me, have regretted the inability to contrast trends in British and American English. Well, now you can.
You can also use the fact that words are now tagged for part of speech. And a lot more books are in the database.
At least, that article says you can do those things. But when I look at the ngram viewer, I don't see how. I get the same choices as I did yesterday. How do I, e.g., contrst British and American?
