noun
A person who visits a home, hotel, or event as an invited or paying guest.
今夜は客が来るので、部屋を片付けた。
I tidied up the room because we have guests coming tonight.
ホテルの客がロビーで待っている。
The hotel guests are waiting in the lobby.
noun
A person who buys goods or services, or attends a performance, event, or establishment. Covers shoppers, diners, spectators, passengers, and tourists.
あの店はいつも客でいっぱいだ。
That shop is always full of customers.
観光客が神社の写真を撮っている。
Tourists are taking pictures of the shrine.
counter
counter for servings (for guests)
Used as a counter for containers of food or drink served to guests, such as cups of tea or bowls of rice. Not a general counter for people.
お茶を二客お願いします。
Two cups of tea, please.
The kanji 客 originally depicts a person under a roof, conveying the idea of a guest or visitor. The reading きゃく is the Sino-Japanese on'yomi.