御客さん[okyakusan] guest
御客様[okyakusama] guest
押掛け客[oshikakekyaku] uninvited guest
佳客[kakyaku] good visitor
花客[kakaku] flower-viewing guest

華客[kakaku] special guests
雅客[gakaku] man of letters
看客[kankaku] spectators
観客[kankyaku] audience
観光客[kankoukyaku] tourist

往訪[ouhou] visit
公式訪問[koushikihoumon] official visit
探訪[tanbou] searching
訪ねる[tazuneru] to visit
訪れる[otozureru] to visit

訪客[houkyaku] visitor
訪日[hounichi] visit to Japan
訪米[houbei] visit to America
訪問[houmon] call
訪う[tou] to ask