[Eeko]

Bribery:

"Bribery, a form of corruption, is an act implying money or gift given that alters the behavior of the recipient. Bribery constitutes a crime and is defined by Black's Law Dictionary as the offering, giving, receiving, or soliciting of any item of value to influence the actions of an official or other person in charge of a public or legal duty."

http://en.wikipedia.org/wiki/Bribery

[Eeko]

Extortion:

"Extortion (also called shakedown, outwresting, and exaction) is a criminal offence which occurs when a person unlawfully obtains either money, property or services from a person(s), entity, or institution, through coercion. Refraining from doing harm is sometimes euphemistically called protection. Extortion is commonly practiced by organized crime groups."

http://en.wikipedia.org/wiki/Extortion

[dan85]

$500 = bribery

$5000000 = lobby