Forex Killer Work

killer
a difficulty that is hard to deal with; "that exam was a real killer"
A person, animal, or thing that kills
cause of death: the causal agent resulting in death; "heart disease is the biggest killer in the United States"
someone who causes the death of a person or animal
A formidable or excellent person or thing
A hilarious joke

forex
Foreign exchange
The foreign exchange market (forex, FX, or currency market) is a worldwide decentralized over-the-counter financial market for the trading of currencies.
The market in which participants are able to buy, sell, exchange and speculate on currencies. The forex markets is made up of banks, commercial companies, central banks, investment management firms, hedge funds, and retail forex brokers and investors.
The foreign exchange (also known as "forex" or "FX") market is the place where currencies are traded. The overall forex market is the largest, most liquid market in the world with an average traded value that exceeds $1.9 trillion per day and includes all of the currencies in the world.

work
Activity involving mental or physical effort done in order to achieve a purpose or result
exert oneself by doing mental or physical work for a purpose or out of necessity; "I will work hard to improve my grades"; "she worked hard for better living conditions for the poor"
A place or premises for industrial activity, typically manufacturing
activity directed toward making or doing something; "she checked several points needing further work"
a product produced or accomplished through the effort or activity or agency of a person or thing; "it is not regarded as one of his more memorable works"; "the symphony was hailed as an ingenious work"; "he was indebted to the pioneering work of John Dewey"; "the work of an active imagination";
Such activity as a means of earning income; employment