顧客【こきゃく】
customer, client, patron
観客【かんきゃく】
spectator, audience
乗客【じょうきゃく】
passenger
旅客【りょかく】
passenger, traveller, traveler, tourist
客観的【きゃっかんてき】
objective
客席【きゃくせき】
guest seating (e.g. theater, stadium), passenger seat (e.g. taxi), audience
客観【きゃっかん】
objectivity, objective, object (philosophical)
旅客機【りょかくき】
passenger plane
客室【きゃくしつ】
guest room (at a hotel), guest cabin (on a boat), passenger cabin (on a plane), drawing room
客船【きゃくせん】
passenger boat
来客【らいきゃく】
visitor, caller
賓客【ひんきゃく】
guest of honour, guest of honor, privileged guest, visitor
客車【きゃくしゃ】
passenger car