burnt, brunt

Burnt or burnt describes something or someone damaged or altered by fire, heat, or the sun--
There's nothing left to mark the spot but a burnt post.
You left the cake in the oven, and now it's burnt.
He forgot his sunscreen; he's burnt all over.
Burnt may describe a pigment or color, one traditionally made darker by burning--
Should we paint the room in burnt umber, or a lighter brown?

Brunt or brunt means the main impact of a blow or attack--
She was the only one in the office, so she bore the brunt of the criticism.
The fence bore the brunt of the collision; the house wasn't damaged much.

Now that you know that, you can say--
"Breakfast bore the brunt of his anger; after he complained about the burnt toast, he forgot about the rest."