1. Nearly table-length distance between the cue ball and target object ball , or between an object ball and target pocket , i.e. a potentially difficult shot due to distance ("you sure left me a lot of green on that one")
2. The cloth covering the table ("oh no, you just ripped the green ")
3. The green ball ("that was a great shot on the green ")
4. Money ("I won a lot of green last night from that wannabe hustler")