Casino and Discotheque

Casino noun - A freestanding airy structure in a scenic setting (as a park) typically offering commanding views.

Discotheque and casino are semantically related In some cases you can use "Discotheque" instead a noun "Casino".

Discotheque noun - A public dance hall for dancing to recorded popular music.

Casino and discotheque are semantically related in place for evening entertainment topic. You can use "Casino" instead a noun "Discotheque".