Set on fire and Warm up

Set on fire verb - Set fire to; cause to start burning.

Warm up and set on fire are semantically related in make or become hot topic. In some cases you can use "Warm up" instead a verb phrase "Set on fire".

Warm up verb - Get warm or warmer.

Set on fire and warm up are semantically related in make or become hot topic. Sometimes you can use "Set on fire" instead a verb "Warm up".