Traditionally, Guwahati has been an important administrative and trading centre and a river port. The name Guwahati is derived from two Assamese words: 'guwa' (areca nut) and 'haat' (market place). The name used to be spelled as Gowhatty (pre-colonial and colonial), standardized to Gauhati (colonial-British), which was then changed to the present form in the late 1980s to conform to the local pronunciation.