A fire is a blaze. Fire, when it's going strong and burning bright, is blazing. The greater the blaze, the harder a fire is to put out. You can also use this word for other types of brightness or shining.

Spawning. Blazes may spawn naturally in nether fortresses in groups of 2 or 3 at a light level of 11 or less. Blazes spawn from monster spawners in nether fortresses. The spawners are located on small platforms with a three-block staircase leading up to it.

The blaze entity has a unique set of spawn events that can be used in Minecraft commands such as: /summon and /event. (The spawn event parameter is called spawnEvent in the Minecraft help for the /summon command and eventName in the Minecraft help for the /event command.)