guest, visitor, customer, client
客 centers on a person who comes from outside: a guest, visitor, customer, or client. All meanings share the idea of someone temporarily present in a place or relationship.
客 combines 宀 (roof, building) with 各, which likely contributes the sound and the idea of arriving or coming. Together they suggest a person arriving at a building as a guest.
Under a roof 宀, the shape 各 looks like a person arriving with a mouth 口 ready to speak. Picture a guest entering a home and greeting the host.
For キャク, imagine a guest arriving with a loud 'kyak' sound as the door opens: kyak -> キャク, and the visitor steps inside.
—
guest; visitor
guest; visitor
customer; client; patron
spectator; audience
passenger
objectivity; objective; object (philosophical)
guest room (at a hotel); guest cabin (on a boat); passenger cabin (on a plane)
guest seating (e.g. theater, stadium); passenger seat (e.g. taxi)
visitor; caller
passenger boat
passenger
passenger plane
guest member; associate member; honorary member
passenger car; passenger carriage
customer traffic; customers; custom
controversialist; polemic; disputant
drawing room; parlor; parlour; guest room
guest of honour; guest of honor; privileged guest; visitor
objective
tourist
customer satisfaction