The difference between Buy and Procure

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

Buy is also noun with the meaning: something which is bought.

check bellow for the other definitions of Buy and Procure

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."

Procure as a verb (transitive):

To acquire or obtain.
Procure as a verb (transitive):

To obtain a person as a prostitute for somebody else.
Procure as a verb (transitive, criminal law):

To induce or persuade someone to do something.
Procure as a verb (obsolete):

To contrive; to bring about; to effect; to cause.
Procure as a verb (obsolete):

To solicit; to entreat.
Procure as a verb (obsolete):

To cause to come; to bring; to attract.