greed

n. voracity, desire, covetousness, avarice, selfishness, rapacity

Greed is the selfish desire for or pursuit of money, wealth, food, or other possessions, especially when this denies the same goods to others. It is generally considered a vice, and is one of the seven deadly sins in Catholicism. (People who do not view unconstrained acquisitiveness as a vice will generally use a word other than greed, which has strong negative connotations.)
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Noun
1. excessive desire to acquire or possess more (especially more material wealth) than one needs or deserves
(hypernym) desire
(hyponym) avarice, avariciousness, covetousness, cupidity
2. reprehensible acquisitiveness; insatiable desire for wealth (personified as one of the deadly sins)
(synonym) avarice, covetousness, rapacity, avaritia
(hypernym) mortal sin, deadly sin

(n.)
An eager desire or longing; greediness; as, a greed of gain.
  

dong1 shi2 xi1 su4
Eating with the east family and sleeping with the west.
Describing a greedy person who goes wherever there is profit to gain. Wanting the best of two worlds.

tang2 lang2 bu3 chan2 (...huang2 que2 zai4 hou4).
The mantis stalks the cicada (...unaware of the oriole behind).
Said of someone just pay attention to the profit of doing something, and do not consider the potential danger involved. Blinded by greed.