The difference between Buy and Reject

When used as nouns, buy means something which is bought, whereas reject means something that is rejected.

When used as verbs, buy means to obtain (something) in exchange for money or goods, whereas reject means to refuse to accept.

check bellow for the other definitions of Buy and Reject

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."

Reject as a verb (transitive):

To refuse to accept.

Examples:

"She even rejected my improved offer."
Reject as a verb (basketball):

To block a shot, especially if it sends the ball off the court.
Reject as a verb:

To refuse a romantic advance.

Examples:

"I've been rejected three times this week."

Reject as a noun:

Something that is rejected.
Reject as a noun (derogatory, _, slang):

An unpopular person.
Reject as a noun (colloquial):

a rejected defective product in a production line