When I was younger, I was taught that hurricanes in the Atlantic Ocean were called "hurricanes" while their meteorological counterparts in the Pacific Ocean were referred to as "typhoons." Hurricane John, which is currently hitting the Pacific coast of Mexico is being referred to as a "hurricane" and not a "typhoon." Why is this the case? Was I taught something incorrect (or am I misremembering it)? Is there a cutoff point in the Pacific Ocean where the nomenclature changes?