As new shops have opened people have been taking their 'custom' [='business'] elsewhere.
It is the 'custom' for the bride to wear a white dress on her wedding day.
We went through 'customs' at the airport without any difficulty.
(..) He scrapes his face like an Englishman. Hail, Ragnar. And hail Ragnar's beard! I want you to teach Lord Egbert our customs. I'll teach him. Remember, I live by brains, not brawn. Yes, my lord. Then fetch him a horse! (..)1958 The Vikings