- You may also be looking for the religious term prophet or the Deep Space 9 episodes "Profit and Loss" and "Profit and Lace".
Profit is the gain from a sale minus what is invested to make that sale, usually in terms of currency. For example, if one purchased an item for 100 credits, and sold it for 200, then one has gained 100 credits in profit.
Harry Mudd once visited the planet Omega Cygni, where he made a large profit by selling the natives their own oceans. (TAS: "Mudd's Passion")
The archaeologist Vash always chose profit when it came to choose between science and profit. (DS9: "Q-Less")
Profit is also widely known to be one of the driving forces behind what most capitalistic Ferengi do, and a major aspect of their religion. (DS9: "Body Parts")