This is the 2021st most frequent Japanese word.
バンコク
Bangkok (the capital city of Thailand).
Used as the proper noun representing the city of Bangkok.
バンコクはタイの首都です。
Bangkok is the capital city of Thailand.
Describes the destination of the flight using the proper noun for Bangkok followed by 行き (bound for).
バンコク行きの飛行機が遅れています。
The airplane bound for Bangkok is delayed.
Indicates the location where the action took place.