Warm-up and Work out

Warm-up noun - A performance, activity, or event that precedes and sets the stage for the main event.

Work out and warm-up are semantically related. In some cases you can use "Work out" instead a verb phrase "Warm-up".

Work out verb - To find an answer for through reasoning.

Warm-up and work out are semantically related. Sometimes you can use "Warm-up" instead a noun "Work out".