In a recent question somebody asked about a layover without mentioning how long the stop would be, thus implying it might perhaps be understood whether layover generally refers to a stop not requiring an overnight stay.
In Australia where I'm from we don't really use layover but we're familiar w...
@MarkMayo: anyone who expects the english language to be consistent hasn't spent much time using it (-;
stopover = stop over = stop-over - all three seem to be in use, at least if you consider it as a verb too. but layover seems to always be written as a single word