This is the 334th most frequent Japanese word.
客
"客" means "guest" or "customer."
Here, '客' is used to refer to a customer or client visiting a business establishment.
客は店の中に入ってきた。
The customer entered the store.
In this context, '客' means a guest, describing someone invited to a place, such as a home.
家に客を招待しました。
I invited a guest to my home.
Here, '客' refers to passengers, individuals utilizing a transportation service.