The difference between Buy and Sale

When used as nouns, buy means something which is bought, whereas sale means a hall.

Buy is also verb with the meaning: to obtain (something) in exchange for money or goods.

check bellow for the other definitions of Buy and Sale

Buy as a verb (transitive):

To obtain (something) in exchange for money or goods

Examples:

"I'm going to buy my father something nice for his birthday."
Buy as a verb (transitive):

To obtain by some sacrifice.

Examples:

"I've [[bought]] material comfort by foregoing my dreams."
Buy as a verb (transitive):

To bribe.

Examples:

"He tried to buy me with gifts, but I wouldn't give up my beliefs."
Buy as a verb (transitive):

To be equivalent to in value.

Examples:

"The dollar doesn't buy as much as it used to."
Buy as a verb (transitive, informal):

to accept as true; to believe

Examples:

"I'm not going to buy your stupid excuses anymore!"
Buy as a verb (intransitive):

To make a purchase or purchases, to treat (for a meal)

Examples:

"She buys for Federated."

"Let's go out for dinner. I'm buying."
Buy as a verb (poker slang, transitive):

To make a bluff, usually a large one.

Examples:

"Smith tried to buy the pot on the river with a huge bluff"

Buy as a noun:

Something which is bought; a purchase.

Examples:

"At only $30, the second-hand kitchen table was a great buy."

Sale as a noun:

An exchange of goods or services for currency or credit.

Examples:

"He celebrated after the sale of company."
Sale as a noun:

The sale of goods at reduced prices.

Examples:

"They are having a clearance sale: 50% off."
Sale as a noun:

The act of putting up for auction to the highest bidder.