bought, brought

Bought or bought is the past tense (yesterday, or sometime ago ) of buy--
I went to the store and bought some cupcakes.
They bought a new TV, and invited us over to watch it.

Brought or brought is the past tense of bring--
I brought the cupcakes to my friend's house.
She brought her books home every day.

Now that you know that, you can say--
"I bought some cupcakes and brought them to my friend's house."

Note--Not to be confused with bough ( rhymes with now ), meaning is a limb of a tree--
"When the bough breaks the cradle will fall..."