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 noun phrase "Warm-up".

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