Countdown and Source

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

Source and countdown are semantically related. In some cases you can use "Source" instead a noun "Countdown".

Nearby Words: count, counting

Source noun - A point or place at which something is invented or provided.

Countdown and source are semantically related. Sometimes you can use "Countdown" instead a noun "Source".