Good question, qwerrie!!
These are the acronyms for Tron, Ripple and Verge. All of them are crypto currencies that appeared a few years later than Bitcoin, and gained a lot of attention from the crypto maniacs because of its possibility of growth (and pumps).

A pump usually is described when a certain asset has a major green move on the chart. Also, could be sometimes a market manipulation move, faking purchases to increase the price of something, (like bitcoin for example) on the charts. If you make some research, there is information about certain exchanges suffering legal procedures against them because of this kind of action, specially during bitcoin's $20,000.00 jump, in Dec. 2017.
I recommend using "tradingview" website or app to start studying graphs. Indicators cannot predict 100% the future, but they are much, much better than guessing. That would be my 2 cents dude hahah CHEERS !!!!😎