KanjiJLPT N2
Burn

burn, blaze, glow

Mnemonic

You gather every sort of thing you own—clothes, books, furniture—and hurl them into a raging fire. Each sort of thing catches and begins to burn. The fire roars louder with every item, burning everything to nothing but swirling ash and black smoke rising into the sky.
Additional thoughts
Picture a massive bonfire where you keep tossing random items in. The randomness of 'sort of thing' emphasizes that fire doesn't discriminate—anything will burn. The growing roar of the flames reinforces the intensity of combustion.
Quick recall
Every sort of thing thrown into the fire will burn.

Details

The keyword for 燃 is burn. This kanji refers to the act of combustion—something catching fire and being consumed by flames. It encompasses both transitive and intransitive senses, meaning to set something ablaze or for something to ignite and burn on its own. It can also be used figuratively to describe a burning passion or fervent emotion within a person.
On'yomi
ねん
Kun'yomi
も.える、も.やす、も.す