Guest
Customer
Under your roof in winter there are more mouths to feed because you let guests stay with you when it's cold. Some of them aren't family, so they have to pay to stay under your roof and get food. Those are customers.
きゃく
None
None
One of your guests is a regular named Kyaku (きゃく) the customer. Kyaku is always staying over at one place or another, so everyone knows their name.