There is basically no difference between a hurricane, a typhoon, and a cyclone. They are all different names for the same kind of intense low pressure system.
The diagram below depicts how different regions refer to tropical cyclones (winds of 70+mph) ...
It is not uncommon for a system to cross a given lat/long and be renamed, as it passes from one agency to another (e.g. Typhoon Alisa becomes Tropical Cyclone Alisa as responsibility passes from Japanese Meteorological Agency to the Australian Bureau of Meteorology)
As these storms in the Eastern Pacific cross 140°W into the Central Pacific, they become the responsibility of the
Central Pacific Hurricane Center in Honolulu, which governs tropical storms in the northern hemi between 140°W and the International Date Line (180°W).