I'll be happy to sell my motorcyle to you, if you wish to buy it.
He was unwilling to buy what the street vendor was persistently trying to sell him.
"I wish I could buy a ram at the pet store"
My mom told me to go to the store to buy food for dinner and so I did.
A company may buy out it's supplier in a form of vertical integration.
Using money or capital to buy an asset with the hope that the value of that asset will increase and give you the opportunity to sell at a profit.
As a verb: I desire that someone will buy me a puppy for my birthday.As a noun: A puppy for my birthday is the object of my desire.
Buy mean purchase and sell for profit means give to someone for more than you had purchase.
I need to buy some groceries by the store before it closes, so I'll say bye to you now.
They certainly sell it, but do give them more information on what you are looking for.
monkeys
The LA Lakers were trying to buy time by protecting the ball in order to mantain their lead in the closing minutes of the game against the Boston Celtics.
your economy is based on what you buy and how much you can sell it for later ...