Greedy. How can a person be greedy? Is wishing for money and wealth considered as to be greedy? Or being selfish at some points for own benefits is greedy?

For me, the people who laugh at others problem, obviously having a good time for themselves because they could get some time out of their busy schedule to laugh their heart out, but also, in the process of bringing shame and embarrassment to the one who is suffering are greedy. Just for a sake of good time, you chose to ruin ...