There is additionally a difference between American and British usage in the word school.

How and when did the word pocketbook come into common American usage?

If she meant no harm, research on American usage of words would have told her to choose a different term.

In American usage the former is often referred to as "piano four hands".

But the word is very much alive in American usage.

Words and songs from Ireland have come into common American usage.

The modern American usage of the word is much closer to the European sense.

American usage allows the service member to be at four states of alert:

"little bird", has been claimed by some to be related to the American usage.

In American usage, only the former is commonly used.