Opening night and World premiere

Opening night noun - The first performance (as of a theatrical production).

World premiere and opening night are semantically related. in first performance topic. In some cases you can use "World premiere" instead a noun phrase "Opening night".

World premiere noun - (music) the first public performance (as of a dramatic or musical work) anywhere in the world.

Opening night and world premiere are semantically related. Sometimes you can replace phrase "Opening night" with "World premiere", this phrases are similar.