
Ignite
Literal Fire
Used when actually starting a fire, not just metaphorically speaking.

Campers need to be careful not to ignite a forest fire.
Immediate Start
Implies that the fire or burning starts quickly or suddenly.

A lightning strike can ignite trees instantly.
Causation
Emphasizes the action of causing something to burn, not the state of being on fire.

He tossed his cigarette and accidentally ignited the dry brush.
Compare with
ArouseFire upInflameKindleLightSparkStartStir up
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