I think you are talking about the Tron Power. What it does is that if you freeze your TRX, it becomes Tron Power at a 1:1 ratio. The Tron Power is used to vote on Super Representatives.

Here are some links if you want to read further:

• https://blog.getty.io/how-to-tronwallet-tutorial-2228a6218646 (look for "Freezing TRX")
• https://www.reddit.com/r/Tronix/comments/8zwa6f/tron_power_freezing_and_bandwidth/

Don't relearn. TRX wallets doesn't work the same as ETH wallets.