Is there any difference between "kick-backs" and "bribes"? Or are they synonyms?
A kickback is a form of negotiated bribery in which a commission is paid to the bribe-taker as a quid pro quo for services rendered.Generally speaking, the remuneration (money, goods, or services handed over) is negotiated ahead of time.
The kickback varies from other kinds of bribes in that there is implied collusion between agents of the two parties, rather than one party extorting the bribe from the other. The purpose of the kickback is usually to encourage the other party to cooperate in the illegal scheme.
The term "kickback" comes from colloquial English language, and describes the way a recipient of illegal gain "kicks back" a portion of it to another person for that persons's assistance in obtaining it.