I dunno. I might lock a door but I wouldn't lock up a door. If I locked up the house, I think it would be a much more elaborate process involving going round checking the windows, locking several doors, setting burglar alarms and so on.

Similarly if you said you'd cleaned up the kitchen rather than just cleaned it, I would visualise the kitchen being restored to order after a five-course meal for twenty rather than just a few tops being wiped down.

Bingley

Bingley