河港[kakou] river port
海港[kaikou] port
開港[kaikou] open port
寄港[kikou] stopping at a port
漁港[gyokou] fishing harbour

空港[kuukou] airport
軍港[gunkou] naval port
港口[koukou] harbor entrance
港町[minatomachi] port city

下町[shitamachi] low-lying part of a city (usu. containing shops, factories, etc.)
下町風[shitamachifuu] downtown style
町角[machikado] street corner
漁師町[ryoushimachi] fishing village
港町[minatomachi] port city

市町[shichou] cities and towns
市町村[shichouson] cities, towns and villages
小町[komachi] a belle
城下町[joukamachi] castle town
町屋[chouka] townhouse (i.e. house in the middle of a town)