Countdown and Curtain raisers

Countdown noun - Counting backward from an arbitrary number to indicate the time remaining before some event (such as launching a space vehicle).

Curtain raisers and countdown are semantically related In some cases you can replace phrase "Curtain raisers" with "Countdown", this terms are similar.

Nearby Words: count, counting

Countdown and curtain raisers are semantically related in short preliminary event topic. Sometimes you can use "Countdown" instead a noun phrase "Curtain raisers".