The difference between Buy and Vend

When used as nouns, buy means something which is bought, whereas vend means the act of vending or selling.

When used as verbs, buy means to obtain (something) in exchange for money or goods, whereas vend means to hawk or to peddle merchandise.

check bellow for the other definitions of Buy and Vend

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."

Vend as a noun:

The act of vending or selling; a sale.
Vend as a noun (UK, Australia, dated):

The total sales of coal from a colliery.

Vend as a noun:

The letter Ꝩ/ꝩ, used in Old Norse, related to the rune wynn (ᚹ, whence also Latin-script Ƿ/ƿ) but with the bowl open at the top, like a y.